Great Voltage Monitoring Relays Deals & Low Prices

Last Updated - January 2026

Best Choice
GODIYMODULES

Voltage Monitor Module, DC 0-99.9V Relay Controller Board for Overvoltage Undervoltage Control Voltage Detection
Digital display DC voltage detection, control the relay output.

US$14.59
GEYA

GEYA Single Phase Voltage Relay Adjustable Over or Under Voltage Protection Monitor Relay 1SPDT 10A (GRV8-01,AC/DC110V-2
Controls its own supply voltage(True RMS measurement)

US$26.99
GEYA

GEYA Single Phase Voltage Relay Adjustable Over or Under Voltage Protection Monitor Relay 1SPDT 10A (GRV8-01,AC/DC110V-2
Controls its own supply voltage(True RMS measurement)

US$24.29
Best Value
LiebeWH

Over Under Voltage Protection Relay Adjustable Voltage Monitoring Relay 35MM Rail Mount Undervoltage Overvoltage Protect
2 INDICATOR LIGHT: Action time of over-voltage relay can be adjusted, 2 sets of normally open and normally closed contac

US$24.32 US$25.52
MARSTEK

Adjustable Voltage Protector with Energy Monitoring Intelligent Relay Reset Protector Voltage Output Stabilizer for Home
【Premium Fire-Resistant Material】: Crafted from high-quality fire-resistant PC material, the casing of this adjustable v

US$21.99
NOYITO

NOYITO Voltage Relay Module Upper Lower Limit Detection Control Switch Off ON Over Voltage Protection Battery Charge Dis
NOYITO Voltage Relay Module . Voltage detection display range: 0 - 99.9V; Voltage detection error: ±0.1V;

US$12.99
12% Off
LiebeWH

Voltage Monitoring Relay Adjustable Over Under Voltage Protector with Delay Timer 35mm DIN Rail Mount for Solar System(D
2 INDICATOR LIGHT: Action time of over-voltage relay can be adjusted, 2 sets of normally open and normally closed contac

US$24.09 US$27.32
KNMIPJD

KNMIPJD Single Phase Voltage Monitoring Relay AC/DC 110V 63A Adjustable Over and Under Voltage Protection Three LED Disp
True RMS Voltage & Current Monitoring:Protector de voltaje Features a Three LED display for real-time, accurate readings

US$32.99
Taidacent

Taidacent LM393 Voltage Comparator Relay Module 1 Channel / 1CH 5V/12V/24V Volt Comparison Board Stable Perfect (12V)
Channel difference is small, more accurate, 0.1V resolution accuracy. There are three versions of 5V / 12V / 24V optiona

US$24.29
YWBL-WH

YWBL-WH Voltage Monitoring Relay Over-Voltage and Under-Voltage Relay 35MM Rail 13-17V 10-14V(DC12V)
✈ Product Name: Voltage Monitoring Relay; function: over voltage, under voltage; Rated voltage: DC 12V/24V/36V/48V; Over

US$25.63

10 Voltage Monitoring Relays deals are available from: Amazon stores, starting from US$12.99.
The biggest discount we found is 12% on Voltage Monitoring Relay Adjustable Over Under Voltage Protector with Delay Timer 35mm DIN Rail Mount for Solar System(DC 24V) at Amazon.
The lowest price we found is US$12.99 while the highest is US$32.99.
Prices for the best Voltage Monitoring Relays deals average at US$23.22.
Last updated on January 31, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Voltage Monitoring Relays.