Product Specification Sheet APS561

Rev. 07/2013

SF501 Wireless Pendant Transmitter (NC500 Series)

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

The wireless call pendant transmitter(s) shall be Alpha Communications® / TekTone SF501 or approved equal. It shall use the 900 MHz frequency for signal transmission, and shall include a transmission indicator LED. No physical wiring connections shall be required to transmit a call. When activated, the SF501 pendant shall continue to send an alarm signal until its reset button, located on the back, is pressed. The SF501 shall also include a neck chain, belt clip and a 3V lithium battery. The transmitter shall be no larger than 2.2" x 1.9" x 0.72" and shall be lightweight enough to be worn comfortably. An optional model RP503 small (ladies) or RP504 large (mens) wristband can be utilized, if resident wishes to wear the pendant on their wrist.

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.

SF501 Water-Resistant Single Button Call Transmitter

The Alpha Communications® / TekTone SF501 Single Button Call Pendant Transmitter features the great range and reliability of 900 MHz in a small, water-resistant package. Users can wear the pendant in the shower or bathtub, outside in the rain, or other environments where the pendant may be splashed with water, or momentarily submerged. A single button design with "press and on-second hold" activation makes the pendant very easy to use, yet still reduces false alarms. When the SF501 is activated, it continues to send an alarm signal until its reset button, located on the back, is pressed. 

The SF501 is especially suited for assisted living installations. Weighing only 1.4 ounces, it includes both a neck cord and a belt clip, and can easily be converted by the end user. An optional model RP503 small (ladies) or RP504 large (mens) wristband allows the pendant to be worn on the wrist or the arm. 

The SF501 features a fully supervised RF link to ensure reliability. The built-in LED flashes with all transmissions, including supervision, so the user can see the transmitter is still functioning. The battery is a field-replaceable long-life 3V lithium type, and is included.

  • Fully supervised wireless 900MHz Agile® transmitter
  • Water-Resistant
  • Large alarm button with alarm activation delay
  • Low battery warning before battery depletion
  • Flashing LED indicator during alarm activation
  • Continuous alarm signal until reset button pressed
  • Field-replaceable, 3V lithium battery (model #BA501)
Height: 2.2" (56mm)
Width: 1.9" (49mm)
Depth: 0.72" (19mm)
1.4 oz
1 mile, open field
0C-60C (32F-140F)
3V Lithium battery (included)
Battery Life:
1-2 years

Required Components
  • Tek-Care®500 (TC500) Wireless Emergency Call System
Alpha Communications
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Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.