6-30V 1-Channel Relay Module with Adjustable Delay Timer
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Prices updated: 12 Oct 2026
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About this product
A single-channel relay module with an adjustable delay timer that switches a load after a set time interval. It runs from 6 to 30 V, takes a high-level trigger input, and uses optocoupler isolation between the control and relay side. Suited to timed switching projects such as delayed lighting or timed device shutdown.
Specifications
- Operating voltage
- 6 - 30 V
- Time interval
- 0.1 s to 999 min (adjustable)
- Trigger signal
- High-level, 3.0 - 24 V
- Output capacity
- DC 30 V 5 A or AC 220 V 5 A
- Isolation
- Optocoupler
Frequently asked questions
Can I trigger this relay module from a 3.3 V microcontroller?
Yes, the high-level trigger range starts at 3.0 V, so a 3.3 V logic output can trigger it. A 5 V logic output also works within the 3.0 to 24 V range.
Is it safe to switch mains loads with this module?
The module is rated for AC 220 V at 5 A, but mains switching is hazardous. Use a proper insulated enclosure, keep mains wiring covered, and verify the load rating before connecting any mains appliance.
