UTC GE Sentrol 2315A-L 3in Armored Overhead Door Contact

The UTC GE Sentrol 2315A-L is a heavy-duty magnetic overhead door contact with a 3-inch maximum nominal operating gap, Form A normally open reed switch, and 24-inch stainless steel armored cable for commercial intrusion alarm systems. Designed for sectional and panel-style overhead doors, it features an adjustable track-mounting bracket that accommodates door channels from 1.5 to 2.4 inches wide. The contact includes a polyurethane-sealed switch, extruded aluminum housing, and mounting hardware. Its closed-loop circuit is rated for up to 100 VAC/DC, 0.5 amps, and 7.5 watts under U.S. specifications.

UTC GE Sentrol 2315A-L 3-Inch Gap Armored Overhead Door Magnetic Contact

The UTC GE Sentrol 2315A-L is a heavy-duty magnetic door contact designed to monitor the open and closed positions of commercial sectional and panel-style overhead doors. Part of the Sentrol 2300 Series, this security contact features a Form A normally open magnetic reed switch configured for closed-loop alarm monitoring and a nominal operating gap of up to 3 inches (76 mm). The contact mounts directly to the overhead door's metal roller track, while the corresponding magnet attaches vertically to the moving door panel. This elevated installation protects the components from damage caused by floor traffic, forklifts, cleaning equipment, and other activities commonly encountered around warehouse and loading dock entrances. Its track-mounted configuration makes the 2315A-L suitable for commercial garages, industrial facilities, distribution centers, service bays, storage buildings, and other properties requiring dependable overhead door position monitoring through a compatible hardwired intrusion alarm system.

The Sentrol 2315A-L incorporates a hermetically sealed Form A reed switch with normally open contacts that close when the actuating magnet is properly positioned near the switch. This provides a closed-loop security circuit when the monitored overhead door is secured, allowing the connected intrusion alarm panel to identify a door-opening condition when the magnet moves away and the circuit opens. The switch provides a maximum nominal magnetic make gap of 3 inches, with manufacturer-specified gap tolerances of approximately plus or minus 20 percent depending on operating conditions and alignment. Its U.S. electrical specifications permit 100 VAC/DC maximum switching voltage, 0.5 amp maximum current, and 7.5 watts maximum contact power, with each rating representing an independent operating limit. Canadian specifications limit the contact to 30 VDC and 50 mA, while European specifications identify a maximum of 48 VAC/DC and 0.5 amp. Because the 2315A-L operates through a passive magnetic reed switch, it does not require an external power supply for its sensing mechanism. The connected alarm control panel provides the supervised circuit used to monitor contact state.

The 2315A-L features a rugged extruded aluminum switch housing with the internal contact encapsulated in protective polyurethane potting compound, helping shield the electrical components from moisture, corrosion, and environmental contaminants. Its adjustable mounting bracket accommodates overhead door roller tracks measuring 1.5 to 2.4 inches (38 to 61 mm) wide, including common 2-inch sectional door tracks. The contact assembly measures approximately 3.07 inches high, 1.80 inches wide, and 2.60 inches deep (78 x 46 x 66 mm) in the manufacturer's published configuration. A factory-attached 24-inch (2-foot) stainless steel armored cable protects the electrical conductors against mechanical wear and accidental damage around moving overhead door equipment. Installation involves securing the contact to the supplied L-bracket, mounting the switch to the stationary roller track, and fastening the corresponding magnet to the moving door panel. The switch can also be installed using existing roller-track mounting bolts where the door hardware permits. Manufacturer instructions specify positioning the contact at least 13 inches above the floor and carefully aligning the magnet with the switch to reduce nuisance alarms. The adjustable mounting arrangement supports installation without specialized door fabrication or floor-mounted contact hardware.

The UTC GE Sentrol 2315A-L is designed for hardwired commercial intrusion detection systems monitoring sectional overhead doors, loading dock entrances, industrial garage doors, and other rolling-panel access points. Its wide-gap magnetic operation helps accommodate normal door movement and minor positioning variations, while the elevated track installation reduces exposure to mechanical damage compared with conventional floor-mounted magnetic contacts. The included magnet, track-mounting bracket, armored cable, and mounting hardware simplify both new installations and replacement of compatible existing overhead door sensors. Manufacturer documentation identifies the 2315A-L as a cULus Listed magnetic contact with Form A switching and a 3-inch nominal make gap. Unlike the Sentrol 2317A-L, which provides Form C single-pole double-throw (SPDT) contacts for normally open or normally closed circuit configurations, the 2315A-L provides a two-wire Form A connection intended for closed-loop monitoring. The related Sentrol 2325A-L accommodates wider overhead door tracks measuring 2.75 to 3.25 inches, making it suitable for installations that exceed the 2315A-L bracket range. The 2315A-L is a passive door position sensor rather than a standalone alarm system and must be connected to compatible supervised intrusion detection equipment. Its combination of 3-inch nominal operating gap, 24-inch stainless steel armored cable, polyurethane-sealed reed switch, and adjustable metal track mounting provides a durable solution for monitoring commercial and industrial overhead doors.