SECO-LARM - ST-BD01Q - Low Battery Cutoff

Product Overview

The SECO‑LARM ST‑BD01Q is a low‑voltage battery cutoff module designed to prevent deep discharge of backup batteries in security and access control systems. It features selectable 12/24 VDC input, adjustable voltage cutoff and restore points, a Master On/Off switch for manual control, and a relay contact rating of 7A @ 30VDC. The module automatically disconnects the battery when the voltage drops below the cutoff point and reconnects it when AC power is restored, and the battery reaches the restore point.

Key Configuration

• • Selectable input: 12 or 24 VDC
• • Relay contact rating: 7A @ 30VDC
• • LED indicators: AC (Green), DC Red (12VDC) / Blue (24VDC)
• • Connections: AC input via terminal block; AC output via gray wire leads; DC via onboard male spade terminals
• • Dimensions: 60 × 45 × 22 mm; weight: 63g

Key Features

The ST‑BD01Q is a battery disconnect module that prevents deep discharge of backup batteries in security and access control systems. When battery voltage drops below the adjustable cutoff point, the relay disconnects the battery from the load to preserve battery life, and automatically reconnects when AC power is restored, and the battery reaches the adjustable restore point.

Technical Context

A Master On/Off switch allows manual connection or disconnection of battery and AC power for easy power cycling. LED indicators provide clear status: green for AC power present, and a dual‑color DC LED that shows red for 12V input or blue for 24V input. The relay is rated at 7A @ 30VDC.
 

Installation Notes

The dimension is 60 × 45 × 22 mm, and it weighs 63g, operating from -40°C to 65°C with up to 90% non‑condensing humidity. Connections include a terminal block for AC input, gray wire leads for AC output, and male spade terminals for DC, with battery leads and double‑sided tape included for easy mounting.