LED tricolor indicator. 126 channels of frequency jump automatically. 7 groups of identification code are determined. Small size, access accordingly for internal lighting. With a small size, ID code groups and 126 channels, it is easy to use and helps you maintain sexual parts Color: As shown Input Voltage: 5V DC 500mA MIN Distance of communication: 400M (visible distance) Working frequency range: 2.4 G ISM Max carrying electric rate: 20 dBm Private Receiver: -94dBm Signal: the 3-pin female Material: Copper Joint Module Size: 7 x 1.8cm / 2.75 x 0.7 in (L x A) Product Weight: 84g / 2.96oz Package List: 4 x PCB Module 4 x Antenna Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.