Nascom Recessed 1" Wide Gap SPDT Door Contact N78G/STSD, Switch & Magnet Set for Steel/Wood Doors, 12" Leads, Grey

The Nascom N78G/STSD is the SPDT (single pole, double throw) version of the N78 series recessed 1" wide-gap door contact. Designed for residential and commercial applications, it is built to cut installation time and help prevent false alarms caused by shifting or warping doors.

Key Features

• SPDT contacts – Single-pole, double-throw switching allows closed-loop or open-loop wiring from one contact.
• Wide gap – A neodymium magnet delivers a 1.25" standard gap that helps prevent false alarms from shifting or warping doors.
• Designed to cut install time – Engineered to reduce installation time on residential and commercial jobs.
• 12" 22 AWG wire leads – Pre-attached 12-inch, 22 AWG wire leads make splicing into the alarm loop quick.
• Polypropylene housing – Switch and magnet bodies are molded from polypropylene for a tough, non-conductive housing.
• Listed to UL 634 – Listed to the UL 634 standard for connectors and switches used with burglar-alarm systems.

Specifications

• Brand: Nascom
• Model: N78G/STSD
• Series: N78
• Type: Recessed magnetic contact (switch/magnet set)
• Size: 1"
• Contact Configuration: SPDT
• Mounting: Recessed
• Termination: Wire leads
• Lead Length / Gauge: 12" / 22 AWG
• Standard Gap: 1.25" (31.75 mm)
• Contact Resistance: 0.15 Ω
• Magnet: Neodymium
• Housing: Polypropylene
• Door Material: Steel or wood
• Color: Grey
• Standard: UL 634

Typical Uses

• Residential and commercial doors
• Doors prone to shifting or warping
• Installations needing SPDT (Form C) switching
• Grey doors and frames

Before installing, verify the required gap, mounting depth and door/frame material, and confirm the contact configuration matches your alarm panel's zone wiring.