Description :  VStarcam AF117 Wireless 433mhz Frequency Door Window Sensor Detector Alarm for Vstarcam C37-AR IP Camera   Specification :  Model: AF117 Technical Parameters: Working Voltage: DC12V Working current:10MA Wireless frequency: 433MHZ Transmission Distance: Open area 120m Size: 81 x 40 x 15mm   Package includeds :  1 x VStarcam AF117 Door Window Sensor   Details pictures :