Product Specification Sheet APS565

Rev. 07/2013

SF520 Wireless Door/Window Egress Transmitter (NC500 Series)

This Specsheet is for a product which is discontinued. Please contact us for alternative products.
Architects' And Engineers' Specifications

The Door/Window Egress Wireless Transmitter(s) shall be Alpha Communications® / TekTone SF520 or approved equal. The SF520 shall use the 900 MHz frequency for signal transmission. The SF520 shall include two (2) built-in magnetic reed switches - one on top, and one on the side - for maximum flexibility. The magnet shall support a 5/8" (.625") gap, and the reed switches shall support a NO or a NC external contact. No physical wiring connections shall be required to transmit an alarm call. The SF520 Shall be powered by a 3V lithium battery. A mounting bracket shall also be provided.

TekTone® has designed the Tek-CARE®500 (TC500) to work as a system. Its NC501 Master Station Computer has been carefully designed and matched to work with Tek-CARE®500 wireless and wired peripherals. TekTone® will not warrant or support components of Tek-CARE®500 that are purchased separately unless the components are add-ons to previously sold systems. TekTone® will also not warrant or support a system that is a mix of TekTone® and Non-TekTone® parts, unless prior written permission has been obtained. In order to track our systems and to inform facilities of software upgrades, full site information (site name, address and phone number) will be required when ordering. Site information and NC501 warranty number will also be required when requesting technical support.

SF520 Door/Window Egress Wireless Transmitter

The Alpha Communications® / TekTone SF520 Door/Window Egress Wireless Transmitter is for use with the TekCARE®500 (TC500) Wireless Emergency Call System. The SF520 is based on Frequency Agile® spread spectrum technology and transmits signals at the 900 MHz frequency. The SF520 sends supervised signals to the Tek-CARE®500 system at a selectable interval, making it ideal for both high security installations and residential installations.

The SF520 includes two built-in magnetic reed switches in a tamper-proof case for maximum flexibility. The magnet supports a 5/8" (.625") gap, and the reed switches support a NO or a NC external contact. The SF520 requires no physical wiring connections to transmit an alarm call and is powered by a 3V lithium battery. A mounting bracket is also provided.

  • Reliable 900MHz frequency operation
  • Supervised signals
  • Tamper-Proof case
  • Mounting bracket included
  • 3V Lithium battery included

Height: 3.60" (92mm)
Width: 1.70" (44mm)
Depth: 0.96" (25mm)

0C-60C (32F-140F)
Attractive, flame retardant ABS plastic
Battery Life:
4-5 years
Contact Closure:
1.5 seconds minimum
10 feet maximum between transmitter and switch
3V Lithium (model # BA505)

Required Components
  • Tek-Care®500 (TC500) Wireless Emergency Call System
Alpha Communications
42 Central Drive • Farmingdale • NY • 11735-1202 • Phone: (631) 777-5500 • Fax: (631) 777-5599
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Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.