Still Going Strong: The DCS974LVS DC Voltage Switch
The DCS974LVS is a reliable DC voltage monitoring module trusted by engineers for over a decade. While no longer heavily promoted, it’s still in production—quietly supporting critical applications across transport, telecom, and industrial infrastructure.
It’s designed to detect low voltage conditions in 12V or 24V DC systems, triggering a relay output only if the drop persists beyond a set delay. Simple, durable, and adaptable, this unit continues to be a go-to for legacy system support and new installations alike.
Key Features
- Supports both 12V (8–16.5V) and 24V (18.5–33V) DC inputs
- Adjustable voltage trip point (70–110%) and hysteresis (5–30%)
- Selectable delay timer: 0–30 seconds or 0–30 minutes
- LED indicators for power, relay state, and timing
- DIN rail mountable with reverse polarity protection
Where It’s Used
- Battery supervision in rail and transport infrastructure
- Power monitoring in telecom cabinets and repeater stations
- Automation fault detection in industrial DC control systems
- Field equipment and vehicle-based alert systems
Why Keep Producing It?
Many customers still rely on the DCS974LVS for its simplicity, durability, and proven design. Whether you’re replacing a failed module or building new panels based on established designs—we’ve got your back.
Need One? Just Ask.
We still build the DCS974LVS in small batches. If you’re looking for a dependable DC voltage switch, we’re happy to help you with quotes, specs, or lead time.
Send Enquiry© Bolec Electronics – Supporting legacy systems with dependable hardware.