The Retekess T128-TD019 is a wireless personal calling system comprising a T128 wrist watch receiver and two TD019 personal call buttons. The person needing assistance presses a TD019 button; the T128 watch worn by the carer alerts via vibration, buzzer, light, or any combination of the three. The system operates at 433.92 MHz without Wi-Fi or internet connectivity and requires no ongoing subscription.

Key Features

• T128 watch receiver — LCD display; seven alert mode combinations: vibration, buzzer, light, and combinations thereof; 400 mAh built-in rechargeable battery; charges via USB (5 V / 1 A); ASK modulation; display supports A–Z letters, digits 0–9, and user-defined area or service type labels; weight 44 g
• TD019 personal call button — single large button for straightforward personal calling; 433.92 MHz ASK modulation; EV1527 coding; transmit power 13 dBm; powered by CR2450 3 V / 600 mAh lithium manganese dioxide battery (included); standby current <1 µA; working current <15 mA; dimensions 55 × 55 × 18 mm
• Range — approximately 40 m in open areas when the TD019 is paired with the T128 watch receiver; actual range varies with walls, interference, and surroundings
• Adjustable alert settings — prompt duration adjustable 0–15 s; record clear time 0–99 s; repeat cycle time 0–99 s; two work modes: single-key and multi-key
• Receiving sensitivity — up to −108 dBm
• Lanyard and silicone sleeve included per TD019 button — for handheld, worn, or surface-mounted use
• Double-sided adhesive sticker included per button — for fixed mounting
• No Wi-Fi or internet required — plug-and-play pairing, no subscription

Product Benefits

• Large single-button design is easy to operate for elderly users or those with limited dexterity
• Seven alert mode combinations suit different home and care environments
• Carer receives the alert discreetly on the wrist without needing to remain within earshot
• User-defined display labels allow the watch to show room names or call types for multi-button setups
• CR2450 battery in the TD019 has very low standby current (<1 µA), minimising drain between calls
• No Wi-Fi, no app, no ongoing subscription — works out of the box

Ideal Applications

• Home care — elderly or vulnerable individuals calling a carer in another room
• Nursing homes and assisted living facilities
• Hospital wards and patient rooms
• Disability support — enabling independent call alerting
• Any setting requiring a simple, reliable personal call button

Technical Specifications

T128 Watch Receiver

• Operating voltage: DC 3.7 V
• Battery: 400 mAh (built-in rechargeable)
• Charger input: 5 V / 1 A (USB)
• Display: LCD; supports A–Z, 0–9, user-defined labels
• Modulation: ASK
• Alert modes: vibration; buzzer; light; and combinations (7 total)
• Prompt duration: adjustable 0–15 s
• Record clear time: adjustable 0–99 s
• Cycle time: adjustable 0–99 s
• Work modes: single-key and multi-key
• Receiving sensitivity: up to −108 dBm
• Weight: 44 g

TD019 Personal Call Button

• Frequency: 433.92 MHz
• Modulation: ASK
• Coding: EV1527
• Transmit power: 13 dBm
• Battery: CR2450 3 V / 600 mAh lithium manganese dioxide (included)
• Standby current: <1 µA
• Working current: <15 mA
• Range: approx. 40 m in open areas (with T128 watch receiver; range varies with walls, interference and surroundings)
• Dimensions: 55 × 55 × 18 mm

What's Included

• 1 × T128 Watch Receiver
• 1 × USB charging cable
• 1 × English user manual
• 2 × TD019 Personal Call Button (with CR2450 battery fitted)
• 2 × Double-sided adhesive sticker
• 2 × Silicone sleeve
• 2 × Lanyard

Additional TD019 personal call buttons can be paired to the same T128 watch receiver for multi-room alerting.

This is a local wireless calling system and does not contact emergency services or provide a monitored medical alarm service.