M-E MODERN-ELECTRONICS Bell 211 TX Wireless Motion Detector Transmitter for Bell Series Doorbells, PIR Sensor, 433 MHz, 100 m Range, IP44, White

Expand your M-E Bell Series wireless doorbell system with the Bell 211 TX, a dedicated PIR motion detector transmitter that triggers your existing chime when movement is detected. Unlike a standard push button, this sensor adds automatic visitor detection for hands-free operation, making it ideal for entrances, driveways, or covered outdoor areas. With a 433 MHz transmission and up to 100 m range, it integrates seamlessly with compatible M-E receivers.

Highlights

• Passive infrared (PIR) sensor detects motion up to 8 m away within a 100° horizontal angle
• Wireless 433 MHz transmitter pairs with M-E Bell Series receivers (Bell 200, 210, 220, 230, 240, 250, 260, 270, 280, 290)
• IP44 splash-proof housing for indoor or covered outdoor use
• Adjustable sensitivity to suit different environments
• LED indicator for function and battery status
• Powered by 3x AA batteries (not included) with approximately 1 year battery life

In daily use

Mount the Bell 211 TX on a wall near your entry or driveway using the included mounting material. When someone enters the detection zone, the sensor sends a wireless signal to your M-E bell receiver, which sounds the chime. You can adjust the sensitivity to avoid false triggers from pets or passing traffic. The LED indicator helps you monitor operation and battery level at a glance. Installation is straightforward: insert three AA batteries, pair with your existing receiver, and position the sensor at the desired height (typically 2–2.5 m). The IP44 rating means it withstands splashes, making it suitable for covered outdoor areas.

Full specifications

• Product type: Wireless motion detector transmitter
• Compatibility: M-E Bell Series wireless doorbells (Bell 200, 210, 220, 230, 240, 250, 260, 270, 280, 290)
• Sensor technology: Passive infrared (PIR)
• Transmission frequency: 433 MHz
• Wireless range: Up to 100 m (free field)
• Detection range: Up to 8 m
• Detection angle: Approx. 100° horizontal
• Power supply: 3x 1.5 V AA batteries (not included)
• Battery life: Approx. 1 year (depending on usage)
• Protection class: IP44 (splash-proof)
• Mounting type: Wall mount
• Operating temperature: -10 °C to +40 °C
• LED indicator: Yes (function and battery status)
• Adjustable sensitivity: Yes
• Housing material: Plastic
• Colour: White
• Application area: Indoor / covered outdoor
• Included accessories: Mounting material, operating instructions (batteries not included)

Final note

Enhance your M-E Bell system with automatic motion detection – the Bell 211 TX offers reliable, hands-free visitor alerts for your home or business.