Description
[Discontinued] RS232 Serial Control for DC 5V 2-Channel Relays
SPECIFICATION
- Power requirements: DC4.5V – 5V, with inside positive, outside negative; or DC9-12V, First pin connectes to VDD, second pin connected to GND.
- PCB dimensions: 71mm X 47mm
- Master control chip STC15F104W
- Each channel is set from 1 to 255 seconds delay independently
- Simple to operate, most serial instruction are single byte instruction
- Onboard 2 relay (which can be accessed extended 2-way relay module)
- With absorption diode circuit
- Each relay has a LED indicator, LCD lights relay absorption
- With 1-channel power indicator
- With capacitor filter circuit, with improved stability
- Support for 5V or 9-12V input voltage
- The thickness of PCB is 1.6mm, made from military FR-4 board material,along with mounting holes
Interface:
- J5: using 5V power supply input
- J6: using 9 ~ 12V power input, No.1 pin connects VCC, No.2 connects GND
- J3 ~ J4 blue terminal: connect user load, it can be used 220V AC, or less than 30V DC device, the device current can not exceed the relay standard load . Each relay has a normally open contact, a normally closed contact and a common contact. When relay absorps, the common contact and normally open contact conduct; when the relay releases, public contact and normally closed contact conduct.
Serial communication in speed 9600bps, relay control command byte format
|
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
|
0 |
0 |
Command code |
CH4 |
CH3 |
CH2 |
CH1 |
|
