The CS10-CM21 device is a handheld call device with three call buttons. This handheld device can be connected to the CS10‑CM20 interface device through a type 1 jack interface. When the nurse call button is pressed the LED indicator on the wall interface device is switched on with a red colour. Similarly, when the assistant call button is activated, the LED indicator of the wall device is switched on with yellow colour. If the nurse call button is pressed when there is a nurse in a room, who has pressed the nurse presence button, the call made using the nurse call button will be interpreted by the system as an emergency call. The LED indicators inform the patient that the call has been recognized by the system. When the lighting control button is pressed the CS10-CM20 device will activate the output to switch the relay lighting interface module (CS10-IM04)
The CS10-CM20 device is an ergonomic three-button handheld device with a type 1 jack interface and dimensions 130x60x30mm.