Mier DA-500LKA Relay Box Accessory

Extend the control of your Drive-Alert system with the Mier Products DA-500LKA Relay Box accessory. Built to trigger external equipment the instant a vehicle is detected, this relay box uses the RED and BLACK wires to momentarily close the C (dry) relay contacts, delivering dependable, momentary switching for gates, lights, alarms or third-party controllers. As a compact relay accessory, the DA-500LKA simplifies installation—its straightforward wiring and compatibility make it an easy add-on for parking sites, access control, and perimeter monitoring.

Because it provides a dry C-contact output, the DA-500LKA lets integrators keep separate power and control circuits, improving system reliability and safety in security and surveillance deployments. The accessory is engineered for consistent performance in vehicle detection workflows and helps reduce the need for custom relay solutions. Ideal for installers and facility managers who need dependable, vehicle-triggered relay control, the Mier DA-500LKA integrates seamlessly into monitoring and access control systems. Add the DA-500LKA to your setup to enhance automation and responsiveness in your security and traffic control applications.

• Expands Drive-Alert control to external devices, enabling automated responses from gates, gates, lights, alarms or third‑party systems
• Provides momentary dry C-contact switching via RED and BLACK wire connections for reliable vehicle-triggered activation
• Simple wiring and compact relay box design for fast integration into parking, access control and surveillance setups
• Durable, purpose-built accessory (DA-500LKA) that reduces installation time and minimizes equipment changes
• Ideal for security, monitoring and traffic applications where precise, momentary relay control is required