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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: DL
  • Model Number: DL-R81A
  • Standby: 10uA~380uA
  • Speciallity: photosensitive
  • Work: Under light/daytime only
  • Control mode: momentary
  • Operating principle: Super regeneration
  • Modulate mode: OOK/ASK
  • Frequency: 315Mhz,433Mhz, customized frequency is available
  • Decode: Fixed code/Learning code
  • Output: 4 routes
  • Dimension: 40x20mm

Packaging & Delivery

Packaging Details PVC box & carton packing
Delivery Time 7-15 days or negotiable


1. MCU decode
2. photosensitive
3. work at daytime/light only
4. Standby: 2uA/380uA
5.good for battery power supply

Model No.: DL-R81A

Description: 2uA at dark low power remote control receiver modules       


Product Detail:


DL-R81A is a super low power consumption super regeneration receiver module, it adapts imported SMD components, 6.5G high-frequency triode, high Q value inductance, photosensitive components and MCU decoder, it can decode both fixed code(2262) & learning code(1527/2240) at the same time. In the day time or normal light, photosensitive components works, the standby current is less than 380uA, while at the night time or dark working circumstance, photosensitive components will trigger RF module to enter the power saved mode, the standby at this time is even less than 10uA. Because of its outstanding feature, it is a good options for the wireless control system which is power supplied by the battery, especially the system works at day time, and stop at night.


1. Application:

a. 4 bits digital wireless receiving;

b. Industrial remote control, remote measurement and remote sensing;

c. Various wireless control systems which are power supplied by the battery, especially the system works at day time, and stop at night.


2. Technical Specifications:

Operating voltage:


Operating current:


Standby current:

380uA(Max), 330uA(Min) in the light time, 5-15uA at dark time

Operating principle:

super regeneration

Modulate mode:


Frequency range:

433.92MHz or customized

Decode code:

Fixed code(2262, 2260), Learning code(1527,2240)


3. Size and Pin definition


4. Notes for usage

a. Pls use soft lead wire or other hard metal (like telescopic antenna), It can not be either too long or too short, or it will affect the receiving distance. The antenna should be stretched as straight as possible if it is using soft lead wire, and as far as possible from the metal objects.

b. The power voltage needs to be stable with low ripple factor and multilevel wave filtering (such as adding magnetic ball, inductance, capacitance etc.)

c. We suggest the clock frequency of the MCU should be lower than 4MHZ if used together with MCU, the crystal should be as far as possible to the RF receiving module, or the higher harmonic of the crystal will affect the communication distance.

d. Please pay attention to the conformity of rate and code format between encoding IC and decoding IC, otherwise the inconformity will affect communication distance or even break off the communication.







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