Honeywell S-4 Surge Suppressor Kit, 3V DC, Wire Leads

Keep access control relays and lock hardware safe from damaging transients with the Honeywell Commercial Security S-4 surge suppressor kit. This surge protection module is built to protect each active relay that controls a lock or strike, reducing arcing and false activations so your security and monitoring systems stay reliable. The S-4 is a 3V DC suppressor with wire-lead connections for straightforward integration into existing panels, and is specified for use with N-1000 Series controllers to ensure compatibility in many access control deployments. By installing one S-4 per relay, technicians can localize protection, minimize service calls, and extend the life of both relays and door hardware. Designed for commercial security, surveillance, and access control applications, this compact suppressor provides cost-effective protection without complicated wiring. Add the Honeywell S-4 surge suppressor kit to your next install or maintenance project to improve system uptime and safeguard critical locking devices—order now or include it in preventive maintenance for monitored access control systems.

• Protects relay-controlled locks and strikes from voltage spikes and arcing to improve reliability of access control systems
• Designed for per-relay installation (one kit per active relay) to localize protection and reduce downtime
• Simple wire-lead connections (3V DC configuration) for fast integration with existing panels and N-1000 Series controllers
• Extends lifespan of relays and door hardware, lowering maintenance and replacement costs for security installations
• Ideal for monitored security and surveillance environments where consistent relay operation is critical