Great Voltage Monitoring Relays Deals & Low Prices

Last Updated - March 2026

Best Choice
MiOYOOW

Voltage Monitor Module, A30-U1 DC 0-99.9V Delay Relay Controller Board for Overvoltage Undervoltage Control Voltage Dete
1>Screen display Current Measured Voltage Value automatically after power ON. Press SET button enter into set mode and t

CA$31.32
GODIYMODULES

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

CA$30.16
Zerone

Voltage Monitoring Relay, 3 Phase Power Monitor, Over Under Voltage Protector, Phase Loss Sequence Detection, 3-Phase Vo
No external power required: This relay operates without the need for external power, making installation and convenient.

CA$56.44
YWBL-WH

Voltage Monitoring Relay DC 12V/24V/36V/48V Over-Voltage and Under-Voltage Relay 35MM Guide Rail 13-17V 10-14V(DC48V)
TYPICAL APPLICATIONS---The voltage monitoring relay is typically applied in dc motor, battery,UPS power supply, dc switc

CA$30.38
Best Value
Supco

SUPCO 90380 General Purpose Fan Relay, 13 A Load Current, 24 V Coil Voltage, Normally Open and Normally Closed Contacts
Electric relay for receiving and controlling electric signals

CA$11.14 CA$12.86
16% Off
Pretfy

Pretfy DC 6~80V Voltage Monitoring Relay Time Delay Relay Charging Discharge Controller Module Undervoltage Overvoltage
Operating power is DC 6 to 80V, contact load is 30A, 250V AC or 30V DC. High quality voltage monitoring relay is High qu

CA$22.59 CA$26.80
YWBL-WH

Voltage Monitoring Relay, Overvoltage Undervoltage Protector, DC 12V Over-Voltage and Under-Voltage Relay 35MM Guide Rai
PRODUCT NAME: Voltage Monitoring Relay; function: over voltage, under voltage; Rated voltage: DC 12V/24V/36V/48V; Overvo

CA$40.06
Generic

DC 6~80V Voltage Monitoring Relay Time Delay Relay Charging Discharge Controller Module Undervoltage Overvoltage Protect
🌟 Operating power is DC 6 to 80V,contact load is 30A,250V AC or 30V DC. High quality voltage monitoring relay is High q

CA$21.09
Walfront

DPA51CM44 3 Phase Monitoring Relay, Current/Voltage Monitoring Relay Phase Sequence Protector for Three Phase System, Wi
Small Size: This 3-Phase Monitoring Relay has a small compact size for easy and convenient use and install, and the size

CA$33.33
GAEYAELE

GAEYAELE Single Phase Voltage Relay AC/DC110V~240V Adjustable Over or Under Voltage Protection Monitor Relay with LED Di
Function Features: Monitor operating circuit voltage (True RMS).

CA$29.99

10 Voltage Monitoring Relays deals are available from: Amazon stores, starting from CA$11.14.
The biggest discount we found is 16% on Pretfy DC 6~80V Voltage Monitoring Relay Time Delay Relay Charging Discharge Controller Module Undervoltage Overvoltage Protection Relay with 4 Operating Modes Voltage Control Timer at Amazon.
The lowest price we found is CA$11.14 while the highest is CA$56.44.
Prices for the best Voltage Monitoring Relays deals average at CA$30.65.
Last updated on March 13, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Voltage Monitoring Relays.