DGMON400-F – ESI Door Lock Monitor Module | Universal Controller Compatible | UL Certified

DGMON400-F – ESI Door Lock Monitor Module

The DGMON400-F by ESI is a front-facing, UL certified door lock monitoring solution engineered for seamless integration with a wide range of elevator controllers. Designed for both traction and hydraulic systems, this module detects unsafe door conditions—such as short circuits or open gates—and prevents elevator operation until safety is restored. Installation schematics and technical documentation are included.

• OEM part manufactured by ESI (Elevator Systems Inc.)
• Part Number: DGMON400-F (Front-facing unit)
• UL Certified for door lock safety compliance
• Compatible with most elevator controllers across manufacturers
• Microprocessor-based circuitry for reliable monitoring
• Detects short circuits and faulty door/gate positions
• Prevents car movement under unsafe conditions
• Includes full installation schematics and technical instructions
• Proven across 7,500+ successful installations
• Suitable for both commercial and residential elevator systems