Henan Yuding Electronics Corp., Ltd is a manufacturer of radio remote controls located in Zhengzhou, China that produces the F21-4S radio remote control. The F21-4S is an industrial wireless remote control with 4 function buttons that can be used to control hoists, cranes, and other industrial machinery. It has a operating range of up to 100 meters and uses a 310.0325–331.165 MHz frequency range with 0.2675 MHz channel spacing and over 4.3 billion unique codes. The F21-4S is protected to IP65 and operates in temperatures from -35°C to +80°C.

1. Henan Yuding Electronics Corp., Ltd
Address：No. 11 Changchun Road, New & High-Tech Development District, Zhengzhou,450001, Henan,
China.
Tel：0086-371-56972259 Fax：0086-371-56972274 website: http://www.yuding-china.com
E-mail: bella@yuding-china.com Skype: yuding_overseas04
Details of F21-4S Radio Remote Controls
Products Application:
Single hook,Single speed hoist and Hoist crane and for industrial wireless remote control use whic
h is under 4 control points etc.
Brief Introduction:
Transmitter Size:196*65*53mm Weight:320g
Receiver Size:171*86*85mm Weight:550g
Specification:
Application Hoist, winches, lifts, doors and other industrial machine
Frequency 310.0325~331.165Mhz
Frequency generation: Crystal (plug in)
Channel 80
Channel Spacing 0.2675MHz
Control motions 4
Control distance Up to 100m
Certificates CE, FCC, ISO9001:2008
Number of push button 4 Single speed push button +1 start+1 stop
Unique code Over 4.3billon unique ID codes .
Working temperature -35°C ~ +80°C
Enclosure protection class IP65
Transmitter power AA-size batteries
Receiver power AC 380v/220V/110v/48v/ 36v/24v or AC/DC12V
Output capacity Full sealed relay output with 5 amperes
Warranty 1 year
Material glass fiber

2. Henan Yuding Electronics Corp., Ltd
Address：No. 11 Changchun Road, New & High-Tech Development District, Zhengzhou,450001, Henan,
China.
Tel：0086-371-56972259 Fax：0086-371-56972274 website: http://www.yuding-china.com
E-mail: bella@yuding-china.com Skype: yuding_overseas04
Standard configuration:
One transmitter;
One receiver;
One 1m cable connect with receiver;
One operation and maintain manual.
Products Features:
*Four single speed push button and one EMGS button +one START button.
*Control point up to 4.
*With the battery voltage alarm device to cut off the circuit when voltage is insufficient.
*Set the internal functions by computer interface.
*Four push button can be set mutual inhibition or not .
*Up, Down, East, West can be set start, close, speed up, jump strokes, ordinary etc.
The receiver wiring diagram:

3. Henan Yuding Electronics Corp., Ltd
Address：No. 11 Changchun Road, New & High-Tech Development District, Zhengzhou,450001, Henan,
China.
Tel：0086-371-56972259 Fax：0086-371-56972274 website: http://www.yuding-china.com
E-mail: bella@yuding-china.com Skype: yuding_overseas04
Photos of F21- 4s:

4. Henan Yuding Electronics Corp., Ltd
Address：No. 11 Changchun Road, New & High-Tech Development District, Zhengzhou,450001, Henan,
China.
Tel：0086-371-56972259 Fax：0086-371-56972274 website: http://www.yuding-china.com
E-mail: bella@yuding-china.com Skype: yuding_overseas04
Production Process:

5. Henan Yuding Electronics Corp., Ltd
Address：No. 11 Changchun Road, New & High-Tech Development District, Zhengzhou,450001, Henan,
China.
Tel：0086-371-56972259 Fax：0086-371-56972274 website: http://www.yuding-china.com
E-mail: bella@yuding-china.com Skype: yuding_overseas04
Packaging Details:
Service Team:

6. Henan Yuding Electronics Corp., Ltd
Address：No. 11 Changchun Road, New & High-Tech Development District, Zhengzhou,450001, Henan,
China.
Tel：0086-371-56972259 Fax：0086-371-56972274 website: http://www.yuding-china.com
E-mail: bella@yuding-china.com Skype: yuding_overseas04
Certificates: