RF Link Kits - With Encoder and Decoder

This item have two knids of working frequency mode:

One is 315Mhz version and the other is 433Mhz version, please choose the working frequency mode according to your need. And 315Mhz version will be shipped out by default if you do not choose.

1、Transmitter module :

Special Parameter :

Frequency : 433Mhz / 315Mhz

Modulation : ASK

Working Voltage : 4～9V DC

Frequency difference：min±75KHz max±150KHz

Launching power: 50mW (9V)

Working current：＜10mA (9V)

Frequency stability : 0.037ppm/℃

Temperature range：-20℃--+85℃

Transmission rate : ≤10Kbps

Encoder : PT2262 or Compatible Chip

Oscillating Resistance：1.5M

Receiver Sensibility: -105dbm

Emission Distance: 500m in open ground

Size : 37 x 23 x 8mm

This module have been pinout All data interface, convenient for useage, and only when more than one data bits among 10 ~ 13 four data bits are high electricity level, the module will transmit the high frequency signal .

2、Receiver module :

This is a Superheterodyne Receiver Module

Technical Parameters

Operating Voltage: DC 5V

Operating Frequency: 433Mhz / 315Mhz

Operating Current: 2.5mA

Quiescent Current: ≤5mA (5.0VDC)

Transmission rate:≤9.6Kbps

Receiver Sensitivity:-107dBm (50Ω)

Encoding: Fixed Code
   
Modulation: ASK-OOK

Operating Temperature: -30 ℃ ~ +80 ℃

Decoder : PT2272

Oscillating Resistance：270K

Size: 41 x 24 x 6mm

It can be compatible with transmitter with 2262 chip, 433Mhz / 315Mhz, and 1.5M Oscillating Resistance.

Specialized superheterodyne receiving module has an inherent disadvantages:

When remote control signal is too strong and the module oscillation signal will be blocked, and unable to properly receive signal.

So at this time, you should be away for some distance (such as 10 meters) and then it can work normally.

 

In order to test whether the receiving modules work normally, give a 5V DC voltage between the VCC and GND interface of receiving module, and connect light emitting diode with pin 10, 11, 12, 13, 17 interface respectively

When we press A button of trasmitter module, its corresponding pin 11 road LED will be light, until press the other button such as B key, pin 11 extinguish and pin 12 will be light.

Pin 17 interface is the effective decoding output port, no matter which button of the transmitter we push, it will become high level as long as decoding successfully, the transmitter stop transmitting immediately and it will extinguish.

Warning: this kit is not suitable for data transfer but remote control. Safe for 2 commands/secon

3、Encoding and Decoding ：

The popular link is like this: MCU -> Encoder -> Transmitter ------ Receiver -> Decoder -> MCU

PT2262(Encoder) and PT2272(Decoder) are optional, their existence is to 1)avoid confusing when multiple RF links in range 2) isolate disturbance. You can integrate the encoding and decoding work to the MCUs on both side. Whenever there is no 433Mhz / 315Mhz devices around, you may use it as direct cable connection.


Datasheet for PT2272 and PT2262