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KS20 Screen-Free WiFi Phone for Kids | Safe SIP Calling Without Smartphones

KS20 Screen-Free WiFi Phone for Kids | Safe SIP Calling Without Smartphones

High-performance WiFi phone for kids at competitive wholesale prices
Supports safe and reliable SIP/VoIP voice communication
WiFi 802.11 b/g/n/ac/ax, supporting both 2.4GHz and 5GHz networks
Crystal-clear voice quality with Opus audio codec
Caller ID display for easy contact recognition
Supports 1 SIP account for secure communication
No SIM card or telephone line required
Supports OTA firmware upgrades and web-based management


Model:	KS20
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General Details

Technical Data

Introduction

Design & Usability

The KS20 is a screen-free phone for kids designed to provide simple and distraction-free communication for modern families. Without access to social media, games, or internet browsing, children can stay connected with parents and trusted contacts through secure voice calls.
Crafted from a premium blend of child-safe ABS and TPU materials, the handset is lightweight, durable, and comfortable for children to hold. Its robust construction helps withstand daily use in homes, Montessori environments, and childcare facilities.
The device features a tactile keypad, dedicated WiFi connection button, volume controls, status indicators, and a stable charging base. The intuitive design makes it easy for children, parents, and grandparents to operate without technical complexity.
Thanks to its compact footprint and stable design, the KS20 can be conveniently placed in bedrooms, living rooms, study rooms, classrooms, daycare centers, and reception areas.
Technical Highlights & Features

◆ High-performance SIP phone for kids and VoIP communication over WiFi
◆ Supports stable deployment in multi-device environments with remote provisioning capability

◆ WiFi 802.11 b/g/n/ac/ax, compatible with 2.4GHz and 5GHz networks

◆ Opus codec for high-quality and bandwidth-efficient voice transmission

◆ Compatible with mainstream SIP-based IP PBX, Softswitch, and IMS platforms

◆ Easy configuration via web-based management interface

◆ Supports secure OTA firmware upgrades for long-term maintenance

◆ Designed for scalable educational and residential communication deployments
Why Choose KS20?

KS20 is not just a kids phone — it is a purpose-built communication device designed for safety, simplicity, and long-term deployment.
◆No screen :eliminates distraction and screen addiction

◆No SIM required : easy WiFi-based deployment in homes and schools

◆SIP/VoIP supported : compatible with telecom and enterprise systems

◆Dual-band WiFi : stable connection in complex environments

◆OTA upgrade : remote maintenance and long-term scalability

◆ Web management : easy configuration for parents and administrators

This makes KS20 a reliable first phone for kids, especially for families and institutions focusing on safe communication.

Application

Home

The KS20 is an ideal first phone for kids, providing a safer alternative to smartphones. It enables children to stay connected with parents, grandparents, and family members through secure WiFi-based voice communication. As a screen-free and no-internet communication device, it helps reduce unnecessary screen exposure while maintaining reliable contact within the family. No SIM card, mobile contract, or traditional telephone line is required.

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Montessori & Childcare

The KS20 is well suited for Montessori schools, childcare centers, daycare facilities, and early education environments that encourage screen-free learning. Its durable design, simple operation, and reliable SIP connectivity make it an effective classroom communication phone for teachers, administrators, and caregivers. Web-based management also simplifies deployment and maintenance across multiple devices and locations.

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FAQs

Does the KS20 require a SIM card or telephone line?

No. The KS20 connects directly to a WiFi network and supports SIP/VoIP communication. No SIM card or traditional landline is required.
Which WiFi bands are supported?

The KS20 supports both 2.4GHz and 5GHz WiFi networks and is compatible with 802.11 b/g/n/ac/ax standards for stable connectivity.
Is the KS20 easy to set up?

Yes. Parents, schools, and administrators can quickly access the web-based management interface to configure SIP accounts, WiFi settings, and device parameters.
Does the phone support remote upgrades?

Yes. The KS20 supports secure OTA firmware upgrades, allowing remote maintenance and feature enhancements.
Is the KS20 compatible with our existing SIP platform?

Yes. The KS20 is highly compatible with mainstream SIP-based IP PBX, Softswitch, and IMS platforms.
Why is the KS20 a good first phone for kids?

The KS20 combines the simplicity of a traditional telephone with modern WiFi calling technology. Its screen-free design helps children communicate safely without the distractions commonly associated with smartphones.

Why Choose Kaer?

With over 30 years of experience in communication technology manufacturing, Kaer develops reliable and innovative communication devices for families, educational institutions, telecom operators, and global partners.

OEM & ODM / White-Label Solutions

Kaer provides scalable OEM and ODM solutions for global partners who want to launch their own screen-free kids phone product line. Our capabilities include:

• White-label screen-free WiFi phone customization
• OEM kids phone hardware development
• SIP platform integration for telecom operators
• Firmware customization and UI localization
• Branding, packaging, and industrial design support
• Educational deployment solutions for schools and childcare systems
• Large-scale production and global shipment support

We support both small pilot projects and large telecom-grade deployments, making KS20 suitable for consumer brands, distributors, and IoT solution providers.

Request a Sample or OEM Evaluation

Looking for a reliable screen-free WiFi phone for kids or a scalable OEM communication solution?

Contact Kaer to request evaluation samples, SIP compatibility testing, or project-based pricing. We typically respond within 24 hours for OEM inquiries and technical support requests.

Parameter		Details
Complete Machine	Reference Dimensions	Main unit: 1725032mm Base: 1727927.5mm mm * 172 * 59mm
Complete Machine	Case Material	ABS + TPU
SIP	Audio Parameters	HD Voice
		Encoding/Decoding: G.711/722/729, AMR-NB/WB, iLBC, Opus
		With automatic echo cancellation
		DTMF: In-band,Out-of-band,SIP INFO
	Phone Features	Supports 1 SIP account
	Phone Features	Incoming/outgoing calls ; caller ID, ringtone
	User Interface	SIP status indicator light, WiFi status indicator light
	User Interface	SIP status indicator light, WiFi status indicator light
	Network & Security	Supports SIP v1 (RFC2543) and SIP v2 (RFC3261)
		Supports NAT: STUN, TURN, ICE
		Supports RTP/RTCP/SRTP
		Supports Qos
		Supports IPv4 and IPv6
	Configuration Management	Supported configuration modes: WEB
		Restore factory settings and restart
		OTA
Network	WiFi	802 b/g/n/ac/ax, 2.4GHz & 5GHz
Voice	Trumpet	1
Voice	MIC	1
Power Supply	Input	AC 100~240V
Power Supply	Output	DC 5V / 1A
Other	Operating Humidity	10%-95%
	Atmospheric Pressure	86-106 kPa
	Operating Temperature	- 0 ℃ - + 45 ℃
	Storage Temperature	-20℃ - +60℃

General Details

Technical Data

KS20 Screen-Free WiFi Phone for Kids | Safe SIP Calling Without Smartphones

Why Choose Kaer?

OEM & ODM / White-Label Solutions

Request a Sample or OEM Evaluation

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