System Sensor · BG-12 Series

BG-12LX

Active
UL 38 CSFM

BG-12LX Fire Alarm Pull Station Conventional

System Sensor BG-12 Series Introduced circa 2005

System Sensor BG-12LX conventional fire alarm pull station.

Common Applications

Conventional (non-addressable) fire alarm pull station. Used on older or smaller fire alarm systems where addressable is not required. Same physical design as the Notifier addressable version — red Lexan housing, pull-down handle, key-reset. UL listed for fire alarm service.

Specifications

Actuator Function
Pull-down, key-reset
ADA Compliant
Yes
Certifications
UL 38, CSFM
Color
Red
Contact Configuration
SPST (dry contact)
Material
Lexan polycarbonate
Mounting Type
Semi-flush or surface mount

Installation Quick Reference

Panel cutout: 22mm. Insert from the front of the panel, secure with mounting nut from behind (tighten to 2-3 Nm).

Contact block: Snap or screw the contact block onto the rear of the button body. Ensure the contact block orientation matches the wiring diagram — NO terminals are usually marked.

Wiring: Use 0.5-2.5mm² stranded wire with ferrules. Tighten screw terminals to 0.8 Nm. Test the button function before energizing the circuit.

Dimensions

Wiring Diagram

Troubleshooting

Button doesn't respond when pressed

Check the contact block first — it's the most common failure point. Test continuity across the NO or NC terminals with a multimeter. If no click is felt, the return spring in the head may be broken.

Works intermittently

Contact block contacts are pitted or burned. Replace the contact block — don't try to file the contacts. Check if the rated cycle count has been exceeded.

Button feels mushy or doesn't click

The spring return mechanism in the button head is worn. Replace the head. The contact block can usually be reused if it tests OK.

Where to Buy

Price range

$58.05 — $129.4

across 2 distributors

Quick Specs

Actuator Function
Pull-down, key-reset
ADA Compliant
Yes
Certifications
UL 38, CSFM
Color
Red
Contact Configuration
SPST (dry contact)

What People Are Saying

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“Conventional (non-addressable) fire alarm pull station. Used on older or smaller fire alarm systems where addressable is not required. Same physical design as the Notifier addressable version — red Le”

Reddit r/firealarms 37 upvotes View thread →