Mezzanine gate alarm

Mezzanine structure, lift and access product manufacturer has been awarded U.S. Patent No. 9,834,975 for its “Hazard Alert Device for Elevated Barrier,” known commercially as the EdgeAlert Open Gate Alarm System. For every elevated plant application where an open gate condition might occur, an early warning device such as EdgeAlert can make the difference in severe worker injury, company officials note.

A properly installed EdgeAlert will signal an open gate with a highly visible flashing light and loud alarm. The device can be installed on new or existing swing, slide, tilt or scissor gates. It includes a 120 VAC plug-in power supply, but can also be powered by four long life alkaline “D” cell batteries. A Single-Pole, Single-Throw 30V, 2A, 60W Relay Output is provided for connection to other alarms or safety controls. A dual-channel processor system is self-monitoring and will display a “fault” signal if a sensor or wiring problem is detected.

For maximum visibility at elevated and ground levels, amber-colored LED lights are located on the front and back of the alarm enclosure. When a gate is being used, workers may choose to silence the EdgeAlert alarm for 120 seconds by pressing the “snooze/acknowledge” button. However, during such loading or off-loading periods, the highly visible warning light continues to flash. Once an open gate has been closed and secured, users can reset the alarm by pressing the button again, or simply opt for an automatic reset mode. — Wildeck Inc., Waukesha, Wis., 262/549-4000;