TP-328RF Wireless Call Button for Compatible 433 MHz Hubs
Put a call button within reach beside a chair or bed as part of an existing compatible alert setup. The TP-328RF transmits to a compatible 433 MHz EV1527 alarm hub, sold separately. It is for households extending a tested system, not buying a standalone alarm.
- ✅ Request attention with one press — A large central button sends a signal to the paired compatible hub.
- ✅ Keep a call point near the usual seat — The compact body can be positioned on a suitable reachable surface.
- ✅ Add call points in more than one room — Pack sizes offer several separate buttons for compatible hub setups.
- ✅ Avoid running a cable to the button — A coin cell powers the wireless transmitter.
- ✅ Fit it to a suitable flat surface — Double-sided adhesive mounting is shown.
A button transmitter that needs a compatible hub
This button does not produce a complete alert service on its own. Pair it with a hub that accepts its 433 MHz EV1527 signal and check how that particular hub responds. Tuya functionality, phone notifications, sound output and internet dependence belong to the receiving system; a matching radio frequency alone does not prove compatibility.
Choose one, two, three or five buttons. Each button uses one included 3 V CR2032 cell. Position call points within the tested radio range of the receiving hub, then test the complete route from button press to the intended alert in each installed location.
No hub, siren or phone is included. A button press does not guarantee reception, attendance or emergency help. This is not a monitored medical service, and no water-resistance rating is confirmed. Keep it dry and retain another means of calling for urgent assistance.
Add call points only to an already compatible, tested receiving system.
The large central area is the press control.
The receiving hub determines what alert is produced.
Keep the button dry; a bathroom scene does not establish water resistance.
A compatible hub is essential and is not included.
The product does not provide a monitored emergency service.
Adhesive mounting is shown for a suitable flat surface.
Each button uses one included CR2032 cell.
The illustrated button is approximately 50 mm across and 13 mm thick.
Technical details
- Model: TP-328RF
- Type: wireless button transmitter
- Radio/protocol stated: 433 MHz, EV1527
- Pack options: 1, 2, 3 or 5 buttons
- Power: 1 × 3 V CR2032 cell per button, included
- Illustrated dimensions: approximately 50 mm diameter × 13 mm thick
- Mounting: double-sided adhesive method shown
- Required separately: compatible receiving alarm hub
- Excluded: hub, siren, phone and monitored response service
- Use: test reception and receiving-system response after installation
Check your hub's protocol compatibility, then choose the button quantity for your tested call-point layout.
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