Seloky 10PCS Digital Low Voltage Disconnect Switch 12V-36V DC | Auto Cut Off Battery Protection for Solar & RV Li-ion

Smart voltage safeguarding for your battery setup

Seloky presents a compact, relay‑based power controller designed to help manage battery discharge in 12–36V systems such as solar deployments, RVs, and off‑grid setups. This module emphasizes voltage thresholds to support safer operation, a tidy installation, and non‑intrusive protection that fits within small enclosures.

Voltage threshold safeguard

The unit lets you tailor when the battery disconnects as the voltage approaches a preset threshold. The default configuration uses a 12V protection level with a 2V differential, defining the disconnection and reconnection gaps. This approach offers a predictable, adjustable protection profile without altering the voltage at the source.

Factory defaults and reliable restart

To reset to factory defaults, power off, press and hold both buttons, then power on. The display briefly shows 888, confirming the default settings have been restored. If a brief power interruption occurs, your configured settings stay in memory, helping you resume normal operation after reboot.

How it works and what to expect

The module uses a relay‑based switch to control output power, preserving the original voltage level rather than modifying it. It is designed as a protective switching module, not a battery pack. With precise voltage measurement and low energy use, it stays at a minimal draw even under load.

Key capabilities

• Voltage input range of 12–36V for compatibility with common battery chemistries
• Adjustable thresholds and discharging modes for a tailored protection profile
• Important current guidance: stay under 10A for systems below 12V and under 8A for voltages above 12V
• Memory of settings through reboot to preserve configuration continuity

Real life usage scenarios

Ideal for solar powered RVs, off‑grid cabins, and portable power builds where space is at a premium. The compact 57×42×19 mm footprint fits many enclosures, while the relay keeps downstream devices powered by the same voltage level.

• Protects batteries from deep discharge and supports potentially longer service life
• Compact, lightweight unit that installs alongside wiring harnesses
• Simple reset procedures support reliable protection in field setups

Important note: The relay is a switching component only. After disconnection, you should manually cut off the power to complete the protection cycle; otherwise the battery may drain to 0V under certain conditions.

Specifications at a glance

Board size: 57×42×19 mm. Input voltage: DC 12–36V. Voltage measurement precision: ±0.1V. Energy consumption: < 1.5W under full load. Maximum load current: 20A.