Dorgard Retaining Device

The ARRONE dorgard retaining device holds open fire doors and automatically closes them when the fire alarm sounds. It uses two 1.5V alkaline batteries and complies with multiple standards.

• The description claims the device complies with BS 5839-3.
• The description claims compliance with BS EN 1155:1997.
• The description claims acceptance by the Fire and Rescue Services.
• The description claims compliance with EN 61000-6-1:2001.
• The description claims compliance with EN 61000-6-3:2001 +A11:2004.
• The description claims compliance with BS 7273-4 Category C.
• The description mentions a USA patent number 5525963.
• The description mentions a European patent number 0635092.