RDL ST-LCR2 Logic Controlled Relay, Latching

For security, surveillance and AV automation projects that need reliable toggle switching, the Radio Design Labs ST-LCR2 logic controlled latching relay delivers dependable contact expansion and clear status feedback. This DPDT logic controlled relay toggles double-pole, double-throw dry contacts with momentary pulses, letting a single switch or logic pulse alternate outputs without continuous drive signals. An open-collector slave output enables a remote ON indicator or connection to an ST-LCR1 to multiply contact sets — perfect for distributed monitoring and access control installations. The ST-LCR2’s front LED provides immediate visual confirmation of relay closure, reducing commissioning time and simplifying troubleshooting. At just 0.7" high and weighing 2.32 oz, its compact footprint installs easily in control panels, AV racks, or security enclosures. Built for professional AV and security integrators, this latching relay helps streamline system design while maintaining reliable performance for critical monitoring and automation tasks. Add the ST-LCR2 to your next surveillance or access control deployment to expand switching capacity and improve operational clarity.

• Toggle outputs with momentary inputs — latching DPDT contacts let a single pulse alternate on/off control for reliable automation and simplified operator workflows.
• Expand control capability — open-collector slave output supports remote on indicators or daisy-chaining an ST-LCR1 to add more contacts without extra logic.
• Instant visual feedback — built-in LED indicates relay closure for fast troubleshooting and system verification during installation and maintenance.
• Compact, service-friendly design — low-profile (0.7" H, 3" W, 1.6" D) housing fits tight AV racks and security panels, saving space in control closets.
• Designed for pro AV and security environments — robust metal/plastic construction and DPDT dry contacts are ideal for surveillance, monitoring and access control systems.