The product is a wireless baby cry detector, wireless identified digital avoid wrong alarm, please refer to the below details.
* Wireless identified digital avoids wrong alarm
* Automatically detect within the range of signal to avoid no-alarm
* Use 4-AAA batteries
Place the transmitter near baby, the receiver can be placed or carried within the range of wireless signal receiving, in view of electricity saving and the possible effect of wirless to baby, yo can swtich “test on” to “test off” to turn off the test signal which won’t be sent until the baby cries. once the baby cry or other noise occurs, the receiver may start to make electronic crying noise
Please change the batteries if the products out of service. the product is not toy, so please keep out of the place baby’s touch