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Description
BDD RELAY BOARD 1CH 3.3V3,3V 1 Channel High Low Level Triger Relay Module with Optocoupler 1 Channel High Low Level Triger Relay Module Features Fault tolerant design, even if the control line is broken, the relay will not move; Specifications Module interface: DC+: Connect to the positive pole of the power supply (voltage is relay 3. 3V) DC : Connect to the negative pole of the power supply IN: The relay can be controlled by high or low level Relay output: NO: Relay
3,3V 1 Channel High/Low Level Triger Relay Module with Optocoupler
1 Channel High/Low Level Triger Relay Module
Features
- Fault-tolerant design, even if the control line is broken, the relay will not move;
Specifications
- Module interface:
- DC+: Connect to the positive pole of the power supply (voltage is relay 3.3V)
- DC-: Connect to the negative pole of the power supply
- IN: The relay can be controlled by high or low level
- Relay output:
- NO: Relay normally open interface, before the relay is vacant, it will be shorted to COM after picking up
- COM: Relay Common Interface
- NC: Normally closed relay interface. Before the relay is closed, it is short-circuited with COM.
- High and low level trigger selection:
- S1 is the high and low level trigger selection of relay 1;
- When com is shorted to low, the corresponding relay is a low level trigger. When com is shorted to high, it is a high level trigger
Additional Information
| Device | Relay Module |
| Type | 1 Channel | High/Low | Level Triger |
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Exchange/Return Notes
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Reviewed in the United States on June 29, 2025
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Reviewed in the United States on January 6, 2026
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I use this oil in all my vehicles. Pennzoil just makes some of the best engine oil on the market. IMHO!
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★★★★★ 5
oil
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good price -- on time what more could you ask
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★★★★★ 5
Oil jugs in a box
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yep, it's oil jugs in a box. The jugs matched the box and what I ordered so there's that. I put it in my car and the engine didn't explode so that's even better. It's oil people.
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Reviewed in the United States on April 20, 2026