- UL 2560 Listed
- Fully supervised wireless 900MHz transmitter
- 60% smaller and lighter than previous pendants
- UL 2560 Listed
- Fully supervised wireless 900MHz transmitter
- 60% smaller and lighter than previous pendants
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Become an ADI Customer- UL 2560 Listed
- Fully supervised wireless 900MHz transmitter
- 60% smaller and lighter than previous pendants

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Product Overview
The SF503UL Neck Lanyard Pendant and SF504UL Wristband Pendant feature the great range and reliability of 900 MHz in a small, waterproof package. The pendants can be worn in the shower or bathtub, outside in the rain, or other environments where they may be splashed with water or momentarily submerged.
The pendants have a single-button design with "press and one-second hold" activation, making them easy to use but resistant to false alarms. When a pendant is activated, it vibrates briefly and its red LED blinks rapidly for five seconds, then blinks slowly until the alarm is cleared. Alarms may be cleared by placing an RP500 Alarm Clearance Card over the button, or by a sequence of button presses.
The pendant transmitters are especially suited for assisted living installations. They feature a fully supervised RF link to ensure reliability. The built-in LED flashes with all transmissions, including supervision, so the user can see that the transmitter is still functioning.
Main Features
- UL 2560 Listed
- Fully supervised wireless 900MHz transmitter
- 60% smaller and lighter than previous pendants
- Neck lanyard and wristband versions
- Waterproof
- Vibration and blinking red LED for call assurance
- Low battery warning before battery depletion
- Customer-replaceable, 3V lithium-metal battery
General Information
Specifications
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ADI Part Number T9-SF504UL Brand Name TekTone Manufacturer TekTone Sound & Signal Mfg., Inc Manufacturer Part Number SF504UL Product Name Emergency Call Transmitter Product Type Emergency Call Transmitter Weight 0.60oz
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Connectivity Technology Wireless Wireless Technology RF
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Application/Usage Nurse Call System Color Red Depth 0.5" Form Factor Wrist Height 1.6" Width 1.6"
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Compatibility TekTone Tek-CARE500 Wireless Nurse Call System Country of Origin US