◆◆◆Encoding/Decoding◆

There are 3 types of encoding/decoding-Fixed Code, Learning Code, Rolling Code, among Fixed Code is reliable, steady and in low cost and is widely applied, and Rolling Code is secure and be seldom decoded illegally. Please refer to the instructions of encoders and decoders for example PT2262, PT2272, SC2262, SC2272 etc..

http://www.princeton.com.tw/webSite/temp/index.asp

How to encode/decode

Learning Code units and Rolling Code units are through learning button to be encoded/decoded.

A example on how to learn Codes of learning code receiver with relay (Model No.: RR1L):

Turn on supply power, learning indicator blinks, push learning button, learning indicator LED is turned on, then press button of transmitter within 6 seconds, the learning indicator LED blinks twice, learning succeed.

The same steps for the second receiver and the second button of transmitter.

How to clear codes of the receiver:

Keeping pushing learning button for 6 seconds or more, learning indicator LED will be turned on, codes are cleared. 

How to encode/decode fixed code units: A schematic diagram for reference:

http://www.e-madeinchn.com/EncodingDecodingDiagram.jpg

◆◆◆Oscillating Resistances◆

The oscillating resistances of transmitting unit and receiver unit must be matchable each other, otherwise there is not ideal communication effect, the remote range will be shortened and the reliability will be lowered. Following are some matching pairs: