The SF501ES from Alpha is a wireless neck chain pendant transmitter designed for easy and reliable use in various environments, offering enhanced safety for users who may require assistance. Its water-resistant feature allows it to be worn in the shower or outdoors, while a single-button design ensures ease of activation, reducing the likelihood of false alarms. With fully supervised RF communication and a user-friendly interface, the SF501ES is ideal for assisted living scenarios.
Alpha SF501ES Wireless Neck Chain Pendant Features
- Fully supervised wireless 900MHz EchoStream transmitter: Ensures reliable communication and operation for user safety.
- Water-resistant design: Allows usage in wet environments like showers and outdoors without damage.
- Large alarm button with alarm activation delay: Reduces accidental alarms and enhances user experience.
- Low battery warning before battery depletion: Prevents unexpected failures by giving advance notice for battery replacement.
- Flashing LED indicator during alarm activation: Provides visual confirmation that the alarm has been triggered.
- Continuous alarm signal until reset button pressed: Ensures help is on the way until the situation is resolved.
- Field-replaceable, 3V lithium battery (model BA501): Easy battery replacement extends the pendant’s usability.
Detailed Specifications for Alpha SF501ES
| Feature | Details |
|---|---|
| Weight | 1.4 ounces |
| Activation Type | Single button press with one-second hold |
| Battery Type | 3V lithium, field-replaceable (model BA501) |
| Operating Frequency | 900 MHz |
| Indicator | Built-in LED flashes with all transmissions |
| Neck Cord & Belt Clip | Included for versatile wearing options |
| Optional Accessories | Small (RP503) and large (RP504) wristbands available |



















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