wireless standalone door open sensor alarm
USD $2 - $2.5 /Unit
Min.Order:500 Units
Products
Technical specification:
1.Operating voltage: 9-12VDC
2.Operating cuttent:≤30mA
3.Transmitting power:≥10mW
4.Transmitting distance: >100m(in the open area)
5.Operating Frequency:315 or 433MHz