TRANSMITTER UNIT FOR CRANE CONTROLLER; FREQUENCY: 2400 MHZ; CO PANTHER MIDI TRANSISTOR TELERADIO SETINCLUDES:- TRANSMITTER WITH 2 ONE-STEP BUTTONS, WITH ON AND OFF BUTTONS AS AN EMERGENCY BUTTON, RANGE OF 46M (LINE OF SIGHT), WITH AAA BATTERY PACK INCLUDED- RECEIVER WITH 4 TRANSISTORS, VOLTAGE 12-24V DC ; MODEL: TELERADIO T RANSISTOR 2F SET