Door Chime ST-89 Wireless

Sensor unit:
_ Power supply: 3 batteries of type AAA/Micro
– Transmission frequency: 433 MHz
– Wireless range: up to 120 m
– PIR sensor detection angle: horizontal about 100°
– PIR range: approx. 6 m

Signalling unit:
-Power supply: 3 batteries of type “Baby/C” or alternatively via power supply (not included), 5 V/DC, min. 500 mA, round plug 3.5/1.3 mm
– Loudness: 91 – 125 dB