Simplecom CM303 Ultra HD 3 Way HDMI Switch 3 IN 1 OUT Splitter 4K@60Hz | CM303

Simplecom CM303 Ultra HD 3 Way HDMI Switch 3 IN 1 OUT Splitter 4K@60Hz

CM303 is a 3 Way mini HDMI switch that can expand the HDMI input of your HDTV, which can connect more HDMI compatible devices for seamless transitions. Easy plug play operation, simply connect the HDMI input sources to the HDMI inputs on switch and the HDMI output port to HDTV.

Auto Switching
It will automatically switch to the newly switched on input, or if there is only one active input left. If there are multiple active inputs, you can select the input by press the select button on the switch or use the remote control.

Infrared Receiver and Remote Control
The included infrared receiver and remote control allows the switch to be controlled from a distance. Easily switch between HD devices without having to get up from your seat.

Powered from Connected HDMI Devices
No external power is required to make this switch work, as long as the connected HDMI devices supply sufficient power to the switch.

Features

Support 3 HDMI input devices to share one Screen
3 HDMI inputs and 1 HDMI output
Supported Video Resolutions up to 4K@60Hz*
Supports 12 bit deep colour per channel
Backward compatible with previous HDMI revisions
Supports bandwidth up to 18Gpbs
Supports Auto Switching to active input source port
Plug-and-Play, No external power required for standard HDMI devices
Specifications

HDMI version support: HDMI 1.4, HDMI 2.0
HDCP version support: HDCP1.4, HDCP 2.0
HDMI Input Ports: 3
Video Amplifier Bandwidth: 18Gbps
Support Video Format: 4K (3840X2160) @ 60Hz / 1080p / 1080i / 720p / 576p / 480p / 576i / 480i / 3D Video
Support Video Color: 12 bit Deep Color Per Channel
HDR support: HDR10
Support Audio Format: DTS-HD, Dolby-TrueHD, PCM, LPCM
Power Input: MicroUSB 5V (No external power required for standard HDMI devices)
Operating Temperature: 0°C to 70°C
Operating Humidity: 10% to 85% RH(no condensation)
Dimension: 82x58x19(mm)
Package Contents

1x 3 Way

Product Last Updated: 10/04/2026

* Whilst we endevour to have the correct information on our products provided from the supplier/manufacturer errors do occur. If you would like to double check the information, please feel free to contact us and we will be more than happy to confirm information on the item prior to purchase. In the event that product information is incorrect due to information we received from our supplier or manufacturer, we do not take responsibility or be held liable for damage(s) or loss(s). We will work with you and do our best to make the best of a bad situation and work with our supplier(s) and/or manufacturer(s) to supply the correct information for the item purchased etc..