E-DCSR-V2: ENVIROMUX rugged door-contact sensor 

Industrial-grade floor-mount switch that is primarily used for the protection of overhead doors where there is operation of heavy motorized traffic.

Monitors access with a magnetic bridge sensor, which responds to any magnetic material (no special inserts necessary). Can also be used for monitoring side wall and covers.

• Ideal for commercial and industrial installations in harsh environments
• Heavy-cast metal housing with 3.06-feet armored cable
• Floor-mounting hardware included
• For normally open or normally closed circuit connected
• Wide actuating gap up to 2.5 inches (63 mm)
• Helps prevent false alarms caused by door movement or damaged and loose fitting doors
• Connect to digital input on ENVIROMUX 2D/5D/16D, E-1W, E-MINI-LXO or E-MICRO models using a 22 AWG 2-wire cable (connect the other end to the sensor screw terminal)