SSM-220 is kind of wireless smoke sensor by photoelectric design. It can detect smoke on air and trigger the system alarm automatically, and also, it’ll send out the alarm sound by its inside buzzer at the same time.

Function Specification:

- ZigBee Pro (2.4GHz) RF interface

- Smoke detector photoelectric chamber

- Inside buzzer alarm (90dB @ 30cm)

- Ceiling-mount bracket

- LED indicator

- Up to 1 year battery life (Alkaline battery)

- RSSI (Received Signal Strength Indication) supported