UTKFHT Upgrade DC12-36V Low Voltage Protector – Digital Disconnect Switch for Lead-Acid & Li-Ion

Overview

The UTKFHT Upgrade DC12-36V Low Voltage Protector is a compact, smart switch designed to guard your power setup from deep discharge. This digital disconnect module acts as a reliable gatekeeper: it automatically cuts the load when your battery voltage hits a preset threshold. It is a protective switch, not a battery pack, and batteries must be procured separately to fit your system.

Compatibility and rugged design

Designed for DC12-36V systems, it works with lead-acid and lithium-ion batteries and is suitable for configurations that include solar panels. Encased in a high-quality ABS shell, the unit offers strong sealing and dependable performance in outdoor or damp environments, helping extend service life in challenging conditions.

Key features

• Widely compatible with DC12-36V systems, including lead-acid and Li-ion batteries (not for battery packs).
• Waterproof ABS shell for durable protection against the elements.
• 3-digit LED display for clear, at-a-glance readings of voltage and status.
• Automatic load disconnection when the preset voltage is reached, helping to safeguard battery health.
• Memory function preserves your settings through power outages, avoiding reconfiguration.
• Simple two-terminal installation with an included manual for quick setup.
• Important constraint: due to PCB size and miniature relay, recommended continuous current is up to 8A to protect relay contacts.

Easy setup and everyday use

Two straightforward wiring terminals connect to the power source and the load, letting you configure parameters quickly. The built-in memory means your configured threshold remains in place even after interruptions, making routine checks and maintenance smoother.

Notes for safe operation

• Current should generally stay at or below 8A to avoid relay contact wear.
• The protector will operate when the set voltage is reached, but you may want to disconnect the power supply if the threshold is reached frequently.
• This module does not include batteries and is not intended for battery packs.

Real-world applications

Ideal for off-grid solar setups, RVs, boats, and compact power systems where space is limited and reliable protection matters. Use with suitable batteries and compatible accessories to build a balanced, power-conscious routine.