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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: LJV
  • Model Number: RE1200XW1-H01-K170416
  • Total ratational angle: 360°
  • Rotational Torque: 1Kgf.cm Max
  • Shaft Wobble: 0.7xL/30 mm P-P max L-Shaft length
  • Bushing Nut Tighten Strength: 7.0kgf.cm Min
  • Shaft play in rotational wobble: 5°Max
  • Rated Power: DC 5V,A,B lead 5mA Max,C lead 10mA Max
  • Output signal: A,B 2 signals
  • Operating Temperature Range: -30℃ to +80℃
  • Switch contact resistance: 100mΩ Max.

Packaging & Delivery

Packaging Details 2000 pcs /ctn; 6.5KG/CTN
Delivery Time Shipped in 12 days after payment


Company Information


Company Name: Dongguan LJV Industry Investments Co. Ltd

Product Range: Rotary Encoders, Rotary Potentiometers, Rotary Switch/ Tact Switch, Customized Metal Stampings and Plastic parts/ Die Castings   (6 different Business Units, specialized in different products.)

Founded: June of 1996 

Company Address: Yuquan Indutrial Park, Fenggang town, Dongguan City, Guangdong Province, China.

Production Capacity: 4 millions pcs per month

Factory Area:  18,000 square meters

Certification:ISO 9001/ ISO14001/ TS16949; RoHs, SGS

Enterprise Management Software: ERP / CRM / OA

For more information about LJV, please visit our company web: http://www.ljv.cn/en

LJV Innovative and Energetic Management Team




RE12 Encoder Spec

Product Brand: LJV

Product Quality:  Strictly implement ISO9001, TS16949, RoHs

Product Series: 12mm Rotary Encoder  (equivalent to ALPS EC12E2420801)

Product specification: 

I.Mechanical characteristics  
 Total ratational angle    360°
 Rotational Torque 1Kgf.cm Max
 Click Torque 20-150 gf.cm
 Push-Pull Strength of Shaft Pull:8.0 kgf Push:8.0 kgf Min at 10 sec
 Shaft Wobble   0.7xL/30 mm  P-P max   L-Shaft length
 Number of Detents(click) 12detents Step angle:30°±2°
 24detents Step angle:15°±2°
 Without detents
 Bushing Nut Tighten Strength 7.0kgf.cm Min
 Shaft play in axial direction  0.4mm Max
 Shaft play in rotational wobble   5°Max
II.Electrical characteristics
 Rated Power   DC 5V,A,B lead 5mA Max,C lead 10mA Max
 Output signal   A,B 2 signals
 Resolution  12pulses/360°
 Contact resistance between terminals   1ΩMax
 Phase difference   T1,T2,T3,T4≥0.08T
 Sliding noise   t1,t3≤3mS   t2≤2mS 
 Insulation resistance   100MΩ Min at DC 250V
 Dielectric strength   1 minute at AC 300V
III.Endurance characteristics 
 Rotational Life   30,000±200cycles per below 100gf.cm.
 15,000±200cycles per above 100gf.cm.
 Storage Temperature Range -40℃ TO+85℃
 Operating Temperature Range -30℃ TO+80℃
 Soldering Heat Characteristic dipping in solder:260℃±5℃ or less,within 3S
 Solder by hand:300℃±5℃ or less,within 3S
IV.Switch characteristics 
 Switch Action 200-1000gf
 Travel of Switch   0.5±0.2 mm
 Rated Power   DC 5V 10mA Max.
 Switch contact resistance   100mΩ Max.
 Switch Life   20,000±200 cycles




rotary encoder with switch demension in mm:






I. Who have chosen LJV as their long-term business partner?

There’re many multinational corporations such as Amphenol, BOSCH, Amazon, PHILIPS, Samsung, BEKO, BYD, TCL, Galanz, FORYOU, TTI, HYT, IDT doing business with LJV.





II. Why choose LJV as the business partner?

LJV’s core competitiveness is as following:


1. Experienced tooling design and making team

2. Excellent R & D team 

3. Skillful automated assembly line design and making team

4. Qualified quality control system (ISO9001, TS16949)

5. Professional services team



With these advantages, LJV is able to provide best products & services at relatively low costs, which will help our clients cut procurement cost.

Packaging & Shipping
Packaging Detail: 250pcs/ Board, 2000pcs/Carton. The packing also can be customized.

Lead time: 12 days after order confirmed




Trade Clause    
Incoterms:Mode of TransportPayment TermsLead Time of productionMOQ
Ex-work (Dongguan) By Ocean & By AirT/TNormally, 12 days after order confirmed1000PCS (negotiable)
FOB Shenzhen By International ExpressPaypal
CIF UPSWestern Union  
OTHERS (negotiable)FedExMoney Gram   


LJV Teams

Please take a look at the LJV Manage Team who carry on the tradition of providing the highest quality products and superior customer service to all of our valued customers


LJV Team Brainstorm









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