F21-E1B TELECRANE two pairs of sixteen two-way remote control to control a crane configuration. Two-emission one-receive Industrial remote control 
This product is also known as: Industrial remote control crane remote control wireless remote control driving lever handle remote CD hoist electric hoist remote control remote control remote control switch. Pull the handle can be used to replace the original console or cab to realize wireless crane operations, improve safety, reliability, convenience, efficiency of operations, improve working conditions, reduce labor intensity.

Transmitter (handheld) 
Dimensions: 16.4 × 7.5 × 4.6 cm Weight: about 320 grams receiver Size: 18.5 × 8.5 × 8.5 cm Weight: 550 grams with 8 action buttons, including 7 Single-speed keys, a total stop with a battery voltage warning device when voltage is less than its own circuit; 
Control distance: up to 100 meters; 
Security Code: 4300000000 kinds of factory and never repeated; 
Operating temperature: -35 ℃ to +80 ℃ (without regard to battery temperature); 
Protection class: IP65; 
Transmitter Power: DC 3V (two alkaline batteries can be used four months); 
Receiver Power: AC 380V \ 220V or 36V; 
Output contact capacity: 5 amp sealed relay output (AC 250V/10A relays 5 amp fuse). 
This model has more than 350,000 total units used worldwide, is the world's most economical and durable industrial remote control. 
This paragraph is equipped with two hand-held remote control transmitter, a use, has been an alternate, or used in conjunction with two remote control, cooperate with each other, the two co-operation of a Hoisting Machinery or other devices.