Garrison auto-door sensors provide an activation signal for compatible automatic-door controls. The category lists SRE-301 and TRE-501 models. Select a sensor according to the required detection area, entrance geometry and controller interface rather than assuming all automatic-door sensors perform the same function.
The SRE-301 emits near-infrared light toward a focused surface and monitors the reflected level. When a person or object changes that level, its output relay activates. This operating principle is stated for SRE-301 and should not be transferred to TRE-501 without checking its documentation.
A door-opening signal is not the same as verified protective presence sensing. Confirm any required safety devices separately with the door-system supplier. Review mounting height, surface conditions, output contact requirements and power supply, then test the sensing area at the installed entrance.
Send Garrison the door type, controller reference, mounting position and desired activation area. Include environmental conditions and quantity for an application-focused inquiry.
