NovaGuard 433MHz wireless door and window sensor for home alarm system
The NovaGuard 433MHz wireless door and window sensor is designed to integrate with your existing home alarm system. This automatic door open and close detector attaches to doors or windows to sense when they are opened or closed, then reports the event to your alarm panel via a 433 MHz wireless link. It must work with an alarm panel to function—it cannot operate on its own. The sensor uses an encoder IC with 433 MHz communication to ensure reliable pairing with your compatible panel. When an entry point is triggered, the alarm panel can sound a loud alert and push notifications to your mobile device over WiFi or a cellular connection, helping you stay informed whether you’re at home or away. Install it on every door and window to safeguard every corner of your home.
How it works
The door sensor transmits the state change (open or closed) to the alarm panel using 433MHz wireless radio frequency. The alarm panel then sends the alert to your mobile device via WiFi or GSM/4G, enabling real-time monitoring and quick responses.
- The sensor reports to the alarm panel when a door or window is opened or closed via 433MHz.
- The alarm panel forwards the event to your phone through WiFi or cellular connectivity, providing immediate awareness of entry-point activity.
Who is this for
- Homeowners and renters who want comprehensive coverage for every door and window in their living space.
- Users who already have a compatible alarm panel and want to expand their security network with a 433MHz sensor.
- Property owners or small offices seeking reliable door/window monitoring that integrates with a central alarm system and alerts on mobile devices.
Real-world benefits
- Enhanced entry-point security across your entire home, reducing blind spots by adding sensors to every door and window.
- Immediate situational awareness with push notifications to your phone when any entry point is accessed, helping you respond quickly.
- Streamlined setup that pairs with your existing alarm panel, avoiding complex rewiring and enabling flexible placement.
- Clear separation of duties: the sensor handles local entry events while the alarm panel manages notification delivery and siren activation.
Compatibility and installation
- Radio frequency: 433 MHz
- Encoder IC: eV1527
- Must be used with an alarm panel that supports 433 MHz and the eV1527 encoder for proper operation
- Designed for placement on doors and windows to monitor entry activity and relay events to the alarm host
For best results, position the sensor and its magnet in proper alignment on the door or window to ensure reliable state reporting to the alarm panel. Regularly verify the connection between the sensor and your alarm panel to maintain timely alerts on your mobile device via WiFi or cellular networks.


