The Dinsafer Helio DWCH1 is a wireless magnetic contact sensor designed as a zone detector for the Dinsafer Helio smart alarm system. When the transmitter and magnet are separated — as occurs when a door or window is opened — the sensor transmits an alarm signal to the main panel over the 433.92 MHz frequency band. The main panel then triggers the alarm and can send an SMS notification to the user for battery replacement when needed.

The sensor supports the DinsafeR Ready to Arm feature and includes tamper protection. The transmitter can be mounted on either the left or right side of the magnet, providing installation flexibility for doors and windows that open in either direction. The sensor is suitable for most standard door and window frames.

Key Features

• Wireless magnetic contact sensor operating at 433.92 MHz
• Transmission distance: up to 1000 m without obstacle
• DinsafeR Ready to Arm feature supported
• Tamper protection supported
• Transmitter mountable on either left or right side of the magnet
• Main panel sends SMS to user when battery replacement is needed
• Working voltage: DC 3 V
• Battery: 1 × CR123 (3 V)
• Working current: ≤100 mA
• Standby current: ≤15 μA
• Working temperature: -10°C to 50°C
• Humidity: ≤90% rh (non-condensing)

Product Benefits

• The 1000 m open-air range far exceeds typical building dimensions, ensuring reliable signal delivery from any door or window to the main panel without repeaters
• The SMS battery-low notification means the user is informed before the battery actually fails, preventing undetected gaps in coverage
• Tamper protection detects and alerts if the sensor housing is opened or removed, indicating a possible attempt to defeat the detector
• The DinsafeR Ready to Arm feature integrates with the Helio panel to allow arming only when all zones report closed
• Flexible left/right transmitter mounting adapts to virtually any door or window frame configuration

Technical Specifications

• Model: DWCH1
• Compatible System: Dinsafer Helio smart alarm series
• Transmission Frequency: 433.92 MHz
• Transmission Distance: Up to 1000 m (without obstacle)
• Working Voltage: DC 3 V
• Battery: 1 × CR123 (3 V)
• Working Current: ≤100 mA
• Standby Current: ≤15 μA
• Working Temperature: -10°C to 50°C
• Humidity: ≤90% rh (non-condensing)
• Weight (without battery): 22 g
• Weight (with battery): 38 g
• Transmitter Dimensions (L × W × H): 84 × 26 × 22 mm (±0.1 mm)
• Magnet Dimensions (L × W × H): 34 × 11 × 9 mm (±0.1 mm)

Why You'll Love It

• The slim transmitter (84 × 26 × 22 mm) fits neatly on narrow door and window frames without protruding or interfering with operation
• The 1000 m wireless range means the sensor works reliably even when installed on outbuilding doors or garden gates far from the main panel
• The standby current of ≤15 μA keeps the CR123 battery running for an extended period between changes
• No wiring is required — the sensor attaches with surface mounting, making installation non-destructive and reversible