Wireless Smoke Detector Fire Alarm with 433MHz Transmission and 100 Metre Range

This wireless smoke detector fire alarm delivers reliable early warning in a smart, connected design. Its 433MHz radio signal transmits to a compatible receiver up to 100 metres away in open air, giving you centralised awareness across your property. Powered by a standard DC9V stacked battery, the unit maintains ultra-low standby power draw while providing a loud 80dB alarm when smoke is detected. Ideal for home safety, it operates in temperatures from 0°C to +50°C and humidity up to 95% non-condensing, making it practical for most indoor environments.

Features and Construction

The detector combines reliable wireless connectivity with low-maintenance battery operation. Its key specifications are derived directly from the product information.

Wireless Transmission

The alarm uses 433MHz wireless communication with a transmitting distance of at least 100 metres in open space. This allows placement in a remote part of the house while still linking to a central receiver for multi-room or multi-floor monitoring.

Power and Battery Alerts

Power is supplied by a single DC9V stacked battery (6F22/9V). The quiet current is below 10uA, and the alarm current under 100mA. A built-in undervoltage alarm sends a low battery code every 24 hours, so you know when it is time to replace the cell.

Environmental Tolerance

The unit is rated for ambient temperatures from 0°C to +50°C and relative humidity up to 95% without condensation. This covers typical indoor conditions including kitchens, hallways, and living areas.

Uses and Placement

The wireless smoke detector is designed for straightforward installation in rooms where early fire detection is important. It pairs with compatible receivers for centralised alerting.

Home Safety Monitoring

Place the detector in hallways, bedrooms, or living areas to cover the main escape routes. The 80dB alarm is loud enough to be heard even from adjacent rooms over ordinary background noise.

Property and Garage Use

For larger properties, the 100-metre transmission range allows the detector to be positioned in a garage or workshop while still communicating with a base unit in the main house. The temperature range suits unheated indoor spaces within the specified limits.

Multi-Unit Deployments

Multiple detectors can be installed on the same 433MHz frequency, each linking to a central receiver. This is useful for landlords or homeowners who want one monitoring point for several rooms or floors.

Benefits and Buying Value

This smoke detector offers practical advantages in convenience and maintenance. The wireless design avoids the need for hardwiring, and the battery power keeps it running even during a power outage.

Reliable Wireless Signal

The 433MHz transmission is a proven, interference-resistant frequency used in many home safety systems. An open-distance range of 100 metres provides coverage for most UK houses while keeping the receiver in a convenient central location.

Low Maintenance Operation

The ultra-low standby current ensures the battery lasts for an extended period. The automatic low battery alert eliminates guesswork – you will know exactly when to replace the 9V cell, and the alarm continues to function during the low-battery reporting period.

Clear Alarm Warning

An 80dB sound level is easily audible above household activity, giving residents immediate notice to evacuate or investigate. Combined with wireless connectivity, it forms a cost-effective part of any home fire safety plan.