DC Relay Switch Controller (6~80V) with Case – Voltage Detection & Charge/Discharge Monitors


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DC Relay Switch Controller (6~80V) with Case - Voltage Detection & Charge/Discharge Monitors $18.99

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This product enables digital display DC voltage detection and controls the relay output. The relay interface board operates on DC 6~80V and is outfitted with 2 buttons for user-friendly operation. A distinct feature of the board is its LED display, providing a clear and convenient way to check the value.

The product offers an adjustable voltage detection range from DC 0~99.9V. The relay becomes operational when the measured voltage drops below the lower limit or escalates above the upper limit value. This makes the board an effective solution for voltage detection switch, battery over/under voltage protector, and a discharge meter.

A protective cover accompanies the product for added safety.


The relay switch controller is composed of PCB and ABS. The working voltage is DC 6~80V while the voltage detection range spans from DC 0~99.9V. With wiring error tolerance at around +/-0.1V, the relay ensures precise operation. The working current stands at 8mA/24V when the relay is open and LED display is OFF. Conversely, it is 58mA/24V when the relay is closed. The relay switch controller undergoes a set of transformations, offering normally open/normally close (NO/NC) configurations.

The contact load for NO stands at 30A/250V AC or 30A/30V DC, while for NC, it is 20A/250V AC or 20A/30V DC. Please note: When working with high voltage DC, the load current should be kept under 10A to prevent electric arc damage to the relay contact.

The contact resistance is ≤100mΩ(1A 6VDC) and the relay switch offers mechanical durability of 10 million times. It maintains its electricity durability to over 100,000 (20A~250VAC). The operating temperature ranges between -40~85°C.

The size of the product is 9.4 * 5.2 * 3cm / 3.7 * 2.05 * 1.18in, and comes in a box that is approximately 9.5 * 6 * 3cm / 3.74 * 2.36 * 1.18in in dimensions. The weight of the product package is 85g / 3oz.

Package includes:

1 * Relay Switch Controller