anti-lost alarm

Description:
Microcomputer control technique adopted. It consists of two parts: receiver (big part) and transmitter (small part).
It works and identifies according to the different codes. The receiver will be kept with the host, the transmitter will be kept with the things which the host want to protect
Parameter:
Transmitter: 44 (H)x28 (W) x 8 (D) mm. Weight: 9.3 g. Battery: CR 2032 x 1 (3V)
Receiver: 460 (H) x 36 (W) x 15 (D) mm. Weight: 35.5 g. Battery: NO. 7 x 1(1.5V, AAA size)