ServiceSiren™

Voltage: DC12V
Working current: 280mA
Static current: 14mA
Wireless sensors: Maximum 100pcs
Receiving frequency: 315/ 433MHz ±0.5MHz Wireless receiving sensitivity: 5mV/m
Receiving distance: no obstacle 100m 
Anti-interference: 1V/m (Range: 20MHz~1KMHz) 
Volume: 110dB±3dB
Working temperature: 0~40°C
Relative humidity: ≤90% (no fog)