4 Way 5V Relay Module With Optocoupler Isolation Supports High And Low Level Trigger Expansion Board
1. The module adopts relay, normally open interface large load: AC 250V/10A, DC 30V/10A
2. Using chip optocoupler isolation, strong driving ability, stable performance; trigger current 5mA
3. Module operating voltage 5V, 12V, 24V for choice
4. Module can be set through the jumper high level or low level trigger
5. Fault-tolerant design, even if the control line is broken, the relay will not be activated
6. Power indicator (green), relay status indicator (red)
7. Interface design humanization, all interfaces can be directly connected through the terminal leads, very convenient
8. Size: about 5 x 2.6 x 1.85 cm, with 4 fixing bolt holes, holes about 3.1 mm, spacing about 44.5 x 20.5 mm
-Module interfaces:
1. DC+: connect to power supply positive (voltage according to relay requirements, 5V, 12V and 24V options)
2. DC-: connect to power negative
3. IN: can be high or low level to control the relay to close
-Relay output:
1. NO: normally-open relay interface, vacant before the relay is engaged, and shorted to COM after the relay is engaged
2. COM: relay common interface
3. NC: normally closed relay interface, shorted to COM before the relay is activated, and left open after the relay is activated
-High and low level trigger selection terminal:
1. Low level trigger when jumper is shorted to low
2. High level trigger when jumper is shorted to high
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