Dual-Limit Voltage Comparator Relay Module, 0-32 V Adjustable
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Prices updated: 13 Oct 2026
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About this product
A relay module that monitors a voltage against separate upper and lower limits. The relay closes when the sampled voltage stays within the window set by the two adjustable limits, and opens when it goes above or below. The adjustable range is 0-32 V, and the module is intended for industrial control, constant temperature control, solar charge protection and battery charge/discharge control.
Specifications
- Adjustable Range
- 0-32 V
- Limit Type
- Upper and lower (dual limit)
- Relay Output
- Closed within limits, open outside limits
Frequently asked questions
How do I wire the module?
Connect the voltage to monitor to the sampling input terminals (3 or 4 per the listing), and power the module through terminals 1-2. The module's power supply does not affect the set limits once they are adjusted.
How do I set the upper and lower limits?
Use the onboard adjustments to set the upper and lower limit voltages within the 0-32 V range. Confirm the setting with a multimeter before connecting the load that the relay will switch.
