* This device is used for the baby
 * When the baby sleeping in the bedroom and the parents
   doing housework or watching TV outside the bedroom,
   use this device to monitor the baby.
 * If she is awake and crying, the transmitter near the baby
   will send a signal to the acceptor to remind the parents.
 * Low power consumption design.
 * Transmitter: 80 (L)×40 (W)×100 (H) mm
 * Weight: 48g (excluded in battery)
 * Battery: AAAx2
 * Receiver: 80 (L)×40 (W)×100 (H) mm
 * Weight: 50g (excluded in battery)
 * Battery: AAAx2