F21-10D radio remote controls are mainly used for bridge crane and overhead crane,easy to operate to keep workers safety. products Application: MD double speed electric hoist or double speed electric chain hoist with hook,monorails ,double hook /single speed hoist crane, and used for the industrial remote control which are under 23 connection Breif Introduction Transmitter size:239*65* 65mm weight:255g Receiver size:200*165*107mm weight:1200g Specification: control distance: up to 100m unique code : over 4.3billon unique ID codes . temperature : -35°C___+80°C Enclosure protection class : IP65 Transmitter power: DC3v Receiver powder : AC 380v/ 36v/220V or DC12V/24V output capacity: full sealed relay output with 5 amperes Standard configuration: One transmitter ; One receiver; One 1m cable connect with receiver One operation and maintain manual . Products Features: * 10 Dual speed push button * control points are upto 11 *With the battery voltage alarm device to cut off the circuit when voltage is insufficient. *with the Rotate key switch to guarantee the safety. *set the internal functions by computer interface *up/down ,east/west , south/ north push button can be set mutual inhibition or not . *power button can be set start,speed up,jump strokes, ordinary etc. *spare 1-2 ,3-4 key can be set ordinary, interlock,jump strokes,switch etc.