RPH-W 433MHz Wireless Door/Window Sensor

Wireless opening detection for smart home alarm systems

The RPH-W is a compact 433MHz wireless door and window sensor designed for smart home security, alarm panels and RF automation systems. It detects the opening or separation of a door, window, cabinet or access panel, then sends a wireless alarm signal to the matched receiver or alarm host.

This sensor is a practical choice for residential security systems, small commercial spaces, storage rooms, office doors and other locations where cable-free installation is preferred. Its compact white housing keeps the installation discreet while allowing quick placement on common door and window frames.

433MHz learning-code RF transmission

The RPH-W uses 433MHz wireless communication with learning-code compatibility, making it suitable for pairing with compatible RF alarm hosts and control receivers. Learning-code pairing helps simplify installation and replacement because the sensor can be enrolled into a matching system without complex wiring.

For reliable operation, confirm that the alarm host or receiver supports the same frequency and coding type before installation. Site testing is recommended when the sensor is used through walls, metal doors or long distances.

Simple magnetic door/window sensing

The sensor is intended for opening detection applications. When the door or window is closed, the main sensor body and magnetic part remain aligned. When the door or window opens and the two parts separate, the sensor can trigger an alarm signal through the connected RF system.

Typical applications include:

- Door and window intrusion detection

- Smart home alarm systems

- Office, shop and storage room security

- Cabinet, drawer and enclosure opening alerts

- Wireless auxiliary input for alarm hosts

- Low-cost security upgrades without extra wiring

Compact ABS plastic construction

The housing is made from ABS and plastic materials, giving the sensor a lightweight and easy-to-install form factor. The white finish suits most interior doors and windows, and the compact package is convenient for bulk installation projects.

The sensor can be used as part of a complete wireless alarm system or as a replacement accessory for compatible 433MHz platforms. For project supply, confirm required frequency, coding mode, battery specification and pairing method before bulk ordering.

Installation notes

Install the sensor and magnet on a clean, dry surface with proper alignment. Avoid placing the unit directly on large metal surfaces where possible, as metal can reduce RF performance and sensing reliability. After installation, test the opening and closing action several times to confirm stable triggering with the selected alarm host.

Key advantages

- 433MHz wireless door/window opening detection

- Learning-code RF pairing for compatible alarm systems

- Compact white ABS/plastic housing

- Cable-free installation for doors, windows and cabinets

- Suitable for smart home, office and small commercial security

- Useful as an alarm system accessory or replacement sensor

- Simple integration with compatible RF receivers and alarm hosts