Views: 0 Author: Site Editor Publish Time: 2026-03-19 Origin: Site
The Kaer KS20 Kids WIFI Phone is a screenless smart IP phone with completely independent intellectual property rights, designed specifically for children's family communication scenarios. It's a home use IP phone suitable for daily family use, and a professional kids' SIP phone, focusing on the core communication needs of kids' phones to create a safe, clean, and convenient family communication experience for children. The product features a minimalist integrated desktop design, combining the base and handset into one unit. Made of high-toughness ABS+TPU composite material, it balances drop resistance for children with flexibility for daily operation. Suitable for placement in living rooms, bedrooms, children's rooms, and other areas, its compact size doesn't take up much desktop space.
The product uses the SIP protocol as its core communication standard, deeply integrating dual-band WiFi wireless communication and high-definition voice transmission technology. It eliminates the need for a SIM card and traditional telephone line, enabling stable voice calls via home WiFi. Furthermore, through multiple security designs including QoS voice quality assurance, call whitelist management, and encrypted transmission, it blocks nuisance calls at the source, protecting children's communication safety. The device supports basic functions such as one-click WiFi connection, speed dial, and call muting. With clear LED status indicators and voice navigation prompts, its operation logic is simple and easy to understand, allowing children and the elderly to quickly get started. It is also compatible with mainstream SIP servers and IP PBX systems, combining practicality and compatibility.
As a seasoned SaaS hardware provider, Kaer can offer comprehensive customization services for this product, while also supporting in-depth ODM/OEM collaboration throughout the entire process. From appearance design and functional expansion to software configuration and brand packaging, everything can be customized to meet the brand and scenario needs of customers in different industries. It is a high-performance, cost-effective device that is ideal for family children's communication and small home office use.
In terms of communication protocols, it fully supports the core protocols of SIP v1 (RFC2543) and SIP v2 (RFC3261), and is compatible with RTP/RTCP/SRTP real-time transmission protocols, ensuring the security and stability of voice data transmission. It also supports three DTMF signal transmission modes: In-band, Out-of-band, and SIP INFO, perfectly adapting to various IVR voice navigation scenarios. For WiFi functionality, it supports IEEE 802.11 b/g/n/ac/ax protocols, adopting a 2.4GHz + 5GHz dual-band adaptive design, automatically selecting a low-interference, highly stable frequency band according to the usage environment. It also supports mainstream encryption methods such as WEP/WPA/WPA2, comprehensively ensuring the security of home wireless communication.
IP configuration supports both DHCP automatic IP acquisition and static IP manual configuration modes, and is compatible with both IPv4 and IPv6 protocols, adapting to various home network environments. It also supports NAT traversal (STUN/TURN/ICE protocols), effectively resolving communication connectivity issues in complex router networks. In terms of network optimization, it features a QoS (Quality of Service) mechanism, with voice streams given the highest priority by default, ensuring clear and smooth calls even in congested home networks. It also supports automatic network status detection, automatically triggering a reconnection mechanism when the signal is weak or the connection drops, ensuring continuous communication.
In terms of network security, it is equipped with a dual control mechanism of call whitelist/blacklist, allowing only authorized numbers to make and receive calls, thus blocking unknown and harassing calls at the source; the web management interface supports encrypted access, and all configuration information modifications require administrator authorization verification to prevent children from accidentally operating it; the remote upgrade package adopts a digital signature verification mechanism, and only officially certified firmware can complete the upgrade, thus avoiding malicious program attacks from a technical perspective and ensuring the security of device use.
In terms of voice codecs, it supports the full range of mainstream codec formats, including G.711/G.722/G.729, AMR-NB/WB, iLBC, and Opus, and features automatic codec negotiation capabilities, intelligently matching the optimal decoding method based on the network environment. Audio performance is enhanced by professional full-duplex call technology, with built-in high-precision automatic echo cancellation, noise suppression, and automatic gain control. It also supports HD high-definition voice transmission, delivering clear and natural call quality that accurately reproduces realistic conversations, perfectly suited to children's needs for clear communication.
The gamepad's audio system boasts high-specification hardware, featuring a built-in high-sensitivity microphone and high-fidelity speaker. It supports multi-level volume adjustment and a loud ringtone, ensuring clear call notifications even in different areas of the home, effectively preventing missed important calls. For notification tones, it includes standard communication tones such as dial tone, ringback tone, and busy tone. Optimized for screenless designs, it adds voice navigation prompts for WiFi connection, call status, and configuration results, allowing users to clearly understand the device's real-time operating status without a screen display.
The power supply adopts a wide voltage AC input design, supporting AC 100~240V universal mains power standards, and a stable DC output of DC 5V/1000mA, which can adapt to the power environment in different regions around the world without the need for an additional transformer. The physical dimensions have been optimized for humanization, with the main unit measuring 172 50 32mm and the base measuring 172 79 27.5mm, making it compact and exquisite, and it will not take up extra space on your home desk when placed.
Designed specifically for children's use, the device features an environmentally friendly ABS+TPU composite material for its body, offering drop resistance, wear resistance, and scratch resistance. It also boasts a smooth, comfortable feel and no sharp edges, ensuring comprehensive safety for children. The display includes a simple LED screen supporting 3-letter caller ID, along with SIP and WiFi status indicators. Device connectivity, registration, and incoming calls are clearly displayed, providing intuitive visual feedback. Storage is handled by a built-in high-stability dedicated storage chip, securely storing call logs, device configuration information, and other data. All data can be easily viewed and managed through a web management interface.
Call control employs traditional telephone operation logic tailored to the usage habits of all ages. Simply pick up the handset to quickly answer calls and put it down to hang up, requiring no complicated operations and making it easy for children to use. It also supports multi-digit number dialing, featuring standard anti-slip numeric keys for accurate and convenient dialing. Call management supports one-touch call muting via a function key, effectively preventing background noise interference. It also includes a call waiting indicator, with new calls distinguished by a unique ringtone to ensure no important calls are missed.
In terms of ease of use, it supports quick dialing of frequently used contacts, allowing parents to preset family members' numbers in advance, so children can dial with one click without having to memorize complicated numbers; it also supports querying recent call records, allowing for quick callback of received and missed calls, improving call efficiency; it has multiple built-in clear ringtones and supports multi-level adjustment of ringtone volume, which can be flexibly adjusted according to family usage scenarios to adapt to the volume needs of different environments.
The WiFi network configuration adopts a simplified design, supporting one-click WiFi connection. The configuration mode can be triggered by the device's dedicated function key. Parents can quickly complete the network parameter configuration by scanning a QR code with their mobile phones. No professional network knowledge is required throughout the process, making it simple and efficient. The configuration process uses encrypted transmission technology to comprehensively protect the security of home network information. After successful configuration, the configuration result will be confirmed through both voice and light prompts.
Network maintenance supports real-time network status monitoring. When WiFi experiences disconnection or weak signal, the device will automatically trigger a reconnection mechanism and provide a visual reminder via flashing indicator lights. It supports full-parameter visualization configuration via a web interface. Parents only need to connect their computer/mobile phone to the device on the same network to access the management interface through a browser and freely adjust various parameters such as network, call, and permissions. It also supports one-click export of network fault diagnosis logs, which can quickly locate communication problems and facilitate troubleshooting and resolution.
Firmware upgrades support OTA remote upgrade mode. After the device is connected to the network, it can automatically detect the latest official version, or it can be manually triggered through the WEB management interface. The upgrade process is accompanied by clear voice prompts. If the upgrade fails due to network abnormalities or other issues, the device will automatically roll back to the original version to ensure normal device use. The official team will continue to optimize the firmware program to continuously improve the product's voice quality, network stability, and functional experience.
QoS and security features support customizable QoS voice stream priority settings. Parents can flexibly adjust the DSCP flag value through management tools to ensure that voice calls are prioritized even when the home network is congested, guaranteeing smooth call quality. It also features fine-grained call time management, allowing parents to customize the allowed call time range based on their children's study and rest schedules. During non-call times, the device will automatically block all incoming and outgoing calls, balancing children's communication needs with their daily routines.
The handle features an integrated ergonomic design with a built-in high-sensitivity microphone and high-fidelity speaker, ensuring clear call quality. The handle and base are reinforced with a tear-resistant connection, meeting children's needs for flexible movement while enhancing the device's durability, making it a perfect fit for home desktops. The button configuration includes standard numeric keys (0-9), function keys (*, #), and several dedicated function keys. The button layout is scientifically designed, with clear tactile feedback and appropriate spacing, effectively preventing accidental touches by children.
The WiFi button can be short-pressed to connect/disconnect from WiFi, and long-pressed for more than 3 seconds to enter WiFi pairing mode. After operation, the operation status will be reflected by flashing lights and voice prompts, such as "Connecting to WiFi" or "Entering pairing mode". The volume + button can be short-pressed to increase the ringtone/call volume, and a voice prompt "Volume is at maximum" will be given when the volume is at maximum. The volume - button can be short-pressed to decrease the ringtone/call volume, and a voice prompt "Volume is at minimum" will be given when the volume is at minimum. The mute button can be short-pressed to mute the call, and long-pressed for more than 3 seconds to mute the call. When mute is on, a voice prompt "Mute is on" will be given, and when mute is off, a voice prompt "Mute is canceled" will be given. The reset button can be long-pressed for more than 3 seconds to restore factory settings. During operation, a voice prompt "Restoring factory settings" will be given, and the device configuration information will be cleared at the same time.
The interface configuration is equipped with a dedicated DC power interface, which can be directly adapted to the official dedicated power adapter, ensuring stable and safe power supply; at the same time, it reserves a standardized expansion interface to support customization and expansion functions. Various functional interfaces can be added according to the personalized needs of ODM/OEM customers, improving the product's adaptability to different scenarios.
The status feedback adopts a dual feedback mode of "LED indicator light + voice navigation". The device's WiFi connection status, SIP registration status, incoming call status, fault status, etc. can all be indicated by different flashing patterns of lights and clear voice broadcasts. The screenless design enables accurate control of the device's full status and is suitable for the usage habits of children and the elderly. The fault diagnosis has intelligent automatic detection capabilities, which can monitor common faults such as network disconnection, SIP registration failure, and power abnormality in real time. Once a problem is detected, it will clearly indicate the fault type through flashing lights and voice broadcasts. Parents can quickly troubleshoot the problem according to the prompts without professional technical support.
The configuration management system features an HTTPS-encrypted web management interface. All configuration modification operations require administrator password verification, preventing accidental device settings caused by children from the outset. Configuration information supports one-click backup/restore, allowing for quick restoration of original settings after device replacement or reset without reconfiguration. Detailed operation logs are also supported, allowing administrators to view all operation records, including parameter modifications, firmware upgrades, and network configurations, facilitating unified device management.
The whitelist settings can be managed by parents via the web interface or Kaer's dedicated management platform. Parents can freely add, modify, and delete numbers from the whitelist. Only numbers added to the whitelist can call each other. The device will automatically block all unknown numbers and spam calls, creating a clean and safe communication environment for children and preventing unwanted communication interference. Call time settings allow parents to customize the allowed call time range based on their child's daily routine. Outside of these times, the device will automatically block all incoming and outgoing calls, preventing children from using the phone during important periods such as studying, doing homework, and sleeping, thus balancing children's communication needs with their study and rest time.
Multi-terminal management can be integrated with Kaer's professional SaaS management platform, supporting centralized and unified management of multiple devices. Administrators can batch configure device call whitelists, call periods, network parameters, etc., on the platform, and monitor the working status of all devices in real time. It is perfectly adapted to batch usage scenarios such as families with multiple children, educational institutions, and community childcare centers, improving device management efficiency. The platform also supports customization development, allowing adjustments to platform functions and interface design according to customer needs to meet the management requirements of different clients.
The product operates within a temperature range of 0℃ to 45℃, perfectly adapting to different indoor temperatures throughout the year. Whether in the low temperatures of northern winters or the high temperatures of southern summers, the device operates stably. It supports a humidity range of 10% to 95% without condensation, allowing normal use in varying humidity environments, from humid southern regions to dry northern regions, unaffected by regional climate. The storage temperature range is -20℃ to 60℃, meeting the temperature requirements for long-distance transportation and long-term storage, ensuring product quality during warehousing and logistics.
Its anti-electromagnetic interference performance meets the national electromagnetic interference standards for household electronic devices. It can adapt to the electromagnetic environment where multiple electronic devices such as TVs, routers, refrigerators, and air conditioners coexist in the home. There is no signal interference or noise during use, ensuring call quality. The working air pressure supports 86kPa - 106kPa, which can adapt to home use scenarios in different altitude areas. Whether in plains or plateau areas, the device can stably connect to the network and make normal calls.
As a professional kids' SIP phone, this device is fully compatible with all mainstream IP PBXs, softswitches, IMS platforms, and cloud telephony systems based on the SIP protocol, including mainstream systems such as Asterisk and FreeSWITCH. It can seamlessly integrate with existing home communication systems without the need for additional dedicated servers, reducing usage costs. It also supports interoperability with mainstream SIP terminals and gateway devices, enabling seamless cross-device calls with other home use IP phones and SIP softphones, adapting to the needs of multi-terminal collaborative communication in the home.
The device is perfectly compatible with Kaer's dedicated SaaS management platform, supporting centralized control, real-time status monitoring, batch configuration, and remote upgrades. It provides efficient and convenient device management solutions for enterprise customers, educational institutions, and other batch usage scenarios. At the same time, the platform supports customization development, allowing adjustments to platform function modules and interface design based on the management needs of different customers, thereby improving the platform's adaptability.
The product strictly adheres to relevant national and industry standards, meets multiple regulatory requirements for home electronic devices, including safety, electromagnetic compatibility, and environmental protection, and has passed relevant authoritative quality certifications. Designed for children's use, the product is fully compliant with child safety regulations, and the body is made of environmentally friendly and non-toxic raw materials, with no sharp edges or easily detachable small parts, ensuring comprehensive safety for children.
The communication functions comply with relevant national network communication service standards. Voice transmission, data encryption, and network access all meet information security requirements. At the same time, the entire process of production, processing, and packaging of the device complies with environmental protection requirements and aligns with the concept of green and low-carbon development. It is a safe, compliant, and environmentally friendly smart home communication device.
In terms of customization services, as a professional SaaS hardware provider, Kaer offers customers comprehensive, end-to-end customization services. These include: appearance customization (customizing the device logo, color, and materials); function customization (expanding exclusive features, adding expansion interfaces, and adjusting management rules); software customization (optimizing the web management interface, customizing SaaS platform functions, and modifying voice prompts); and packaging customization (customizing branded packaging boxes, exclusive manuals, and customized accessories). Kaer also fully supports ODM/OEM collaborations throughout the entire process, from initial product design, firmware development, and hardware debugging to mass production, quality inspection, and packaging delivery, providing a one-stop integrated solution to meet the diverse needs of different customers.
1. Does this Kids WiFi Phone require a SIM card or a traditional landline?
A: No SIM card or connection to a traditional landline is required. This device functions as a specialized SIP phone for children and a home IP phone; it relies entirely on your home WiFi network to enable voice calls. By utilizing VoIP technology for voice transmission, it eliminates the limitations of physical phone lines and SIM card slots, allowing you to start using the device immediately after unboxing and connecting it to your network.
2. Which WiFi bands does the device support, and is the network connection stable?
A: It supports dual-band WiFi (2.4GHz + 5GHz) and is compatible with the full range of IEEE 802.11 b/g/n/ac/ax protocols. The device can automatically select the band with the lowest interference and highest stability based on your home environment. Additionally, it features automatic network reconnection and QoS (Quality of Service) voice prioritization capabilities; even if your home network experiences minor congestion, it ensures that calls remain clear and fluid, thereby meeting the stability requirements for daily family communication.
3. How can I prevent spam or calls from strangers when my child is using the device? Are there parental control features?
A: The device is equipped with dedicated parental control features. Through a web interface or the accompanying management platform, parents can set up a "whitelist" of approved contacts. Only numbers authorized by parents can make or receive calls, automatically blocking all calls from strangers or telemarketers to create a safe and secure communication environment for your child. Furthermore, you can customize specific call timeframes; incoming and outgoing calls can be blocked during study or rest periods, effectively balancing your child's communication needs with their daily schedule management.
4. Is the device difficult to operate? Can children and the elderly pick it up quickly?
A: Designed specifically for home use, the device eliminates complex procedures and adopts the intuitive operational logic of a traditional telephone—simply pick up the handset to answer and hang it up to end a call. Combined with standard numeric keys and clearly labeled function buttons, children and the elderly can start using the device immediately without needing to learn any new skills. The screenless design features LED status indicators and voice prompts to provide clear notifications for WiFi connectivity, call status, network configuration, and more, ensuring that operational feedback is instantly understandable.
5. How is the call quality? Does the audio design include features tailored specifically for children?
A: Equipped with HD voice technology, the device supports mainstream audio codecs such as G.711, G.722, and Opus. With built-in professional echo cancellation and noise suppression features, it delivers true-to-life, crystal-clear audio reproduction. Additionally, it features a high-sensitivity microphone and a high-volume speaker with multi-level volume adjustment capabilities; the loud ringtone ensures that children can clearly hear incoming calls from anywhere in the home, preventing missed calls.
