SDC QuietDuo LR100 Latch Retraction Kits

Motorized retrofit kits that retract the latch of compatible mechanical exit devices for remote access and door automation.

Model / SKU: LR100 Series
Category: Locks & Access
Product type: Exit-device latch retraction
Role: Actuator / load

Control & power

Control type: Switched power
Power supply: 24 VDC ±10%

Switch the regulated 24 VDC supply with a suitable relay or power controller. Size the supply and contacts for motor inrush. Select the kit for the exact exit device and door width.

A suitable smart controller can expose supported functions to Matter. The control type alone does not confirm electrical compatibility or actual position feedback.

Technical specifications

Current: 1.5 A inrush; 200 mA continuousSource ↗
External power supply: Manufacturer recommends regulated, filtered supply of at least 2 A per kitSource ↗
Mechanical exit: Original exit device retains mechanical egressSource ↗

Selection & installation notes

Family entry: compatibility and pushpad retraction vary by kit. Fire-door use depends on the approved exit-device combination.

Sources & documentation (2)

SDC LR100 Series product information ↗Reviewed Nov 5, 2026
LR100 kit selection and electrical specifications ↗Reviewed Nov 5, 2026