IMAGE Electronic Key Finder Purse MP3 Wallet Cellphone Finder with 5 Receivers - RF Wireless Remote Control

Specifications:
Product type: 1transmitter to 5 receivers
Frequency: 433.92 MHz
Housing Material : ABS
Sound Volume of Receiver: 85dB
Operating Distance: 20m indoor, 20~30m in open space.

Transmitter Size: 6.5*3.2*1.1cm/ 2.56**1.50*0.43inch
Weight: 0.5oz/14g
Battery:CR1632*1(included)

Receiver Size: 5.2X3.2X1.3cm/2.05*1.26*0.43 inch
Weight:0.5oz/14g(with battery)
Battery:CR2032*1(included)
Color: orange, black, red, pink, blue

How to Use:
(1)Match:
Turn up the chain's switch to 'ON' position, it will beep constantly ("dee...dee..."), and press one certain button on the transmitter, so receiver will stop beeping when it match with the button.
Use a pen or needle to turn on the first receiver, it will beep constantly("dee...dee..."). Then push one certain button on the transmitter, LED on and the receiver will stop beeping after matching.LED on the transmitter will light on for a few seconds(about 4s).Make sure it is off, and you can match the rest receivers to the other buttons.
Note: Please match the receiver one by one, avoiding that one button match several receivers.
(2)Find: When you want to locate the lost things, just push the corresponding button, when you are searching in the right direction and in operation range, LED on the transmitter will on and you will hear alarm within 0.5-2 seconds (according to the distance), the alarm will last for 4 seconds and then stop.
Note: Operation distance of this item is 20m indoor, 20~30m in open space.