Function:
1.Control channel group (from 1:2 to 1:15)
2.LCD display and saving power mode.
3.Function: display COPY and RANGE.
4.Replace battery (1 CR2032 3V), data still saves latest resetting.
5.Button: Up, Stop. Down, Channel selection and Function switch.
6.Radio frequency: 433.92Mhz.
7.Transmitter size: 12(L) x 4.5(W) x 1.5(H) cm
8.Material: ABS