The Dinsafer Helio DGDH1 is a wireless contact sensor specifically designed for roller shutter doors, working as an accessory for the Helio smart alarm system. When the roller shutter door is opened while the system is armed, the sensor transmits a trigger signal to the Helio main panel, which activates the configured alarm response.

The sensor uses a reed-and-magnet design: the transmitter and reed part attach to the shutter frame, while the magnetic part attaches to the moving door surface. A 290 mm connecting line allows for flexible positioning. Energy saving mode and RF supervision keep the power draw low, while the main panel sends an SMS to the user when battery replacement is needed. Tamper protection triggers an alert if the unit is removed.

Key Features

• Designed for roller shutter doors — reed-and-magnet contact detection
• Triggers alarm when shutter opens under armed status
• RF supervision for continuous wireless link monitoring
• Tamper protection
• Low battery SMS notification from the main panel
• Wireless transmission at 433.92 MHz, up to 1000 m without obstacle
• Powered by 1 × CR123A (3 V) battery

Product Benefits

• Dedicated roller shutter design uses a 170 mm magnetic part that runs the full vertical width of a standard shutter door contact zone
• RF supervision actively monitors the wireless link, flagging any loss of contact with the panel before it creates a coverage gap
• Tamper protection means physical removal of the sensor triggers an alarm, deterring disabling by intruders
• At only 169 g without the battery, the complete assembly is lightweight and does not place load on the shutter mechanism
• The 290 mm connecting line provides mounting flexibility where the transmitter and reed part cannot be collocated directly

Technical Specifications

• Model: DGDH1
• Working Voltage: DC 3 V
• Battery: 1 × CR123A (3 V)
• Working Current: ≤100 mA
• Standby Current: ≤15 μA
• Transmission Distance: 1000 m (without obstacle)
• Transmission Frequency: 433.92 MHz
• RF Supervision: Supported
• Tamper Protection: Supported
• Working Temperature: -10°C to +50°C
• Humidity: ≤90% rh (non-condensing)
• Weight: 169 g (without battery); 185 g (with battery)
• Reed Part Dimensions: 38×15×10 mm
• Magnetic Part Dimensions: 15×170×15 mm
• Transmitter Dimensions: 84×26×22 mm
• Connecting Line Length: 290 mm (L×W×H ±0.1 mm)

Why You'll Love It

• The long 170 mm magnetic strip accommodates the wide contact gap geometry of roller shutter doors, which standard door sensors cannot cover
• One CR123A battery powers the unit; the panel sends an SMS replacement reminder so the battery is never silently depleted
• The slim transmitter (84×26×22 mm) attaches to a shutter frame without obstructing the door travel or surrounding structure
• Part of the Helio ecosystem: pairs with the same panel as motion sensors, smoke detectors, and the outdoor siren