Access control, monitoring and alarm systems; devices for monitoring walk-in refrigerators, freezers, and cold-room compartments, to detect and to control room temperature, lighting, door/window frame heaters and humidity, and to transmit information and alarms regarding the room temperature, lighting, door/window frame heaters and humidity of walk-in refrigerators, freezers, and cold-room compartments, namely, temperature controllers for walk-in refrigerators, freezers, and cold-room compart...

Access control, monitoring and alarm systems; devices for monitoring walk-in refrigerators, freezers, and cold-room compartments, to detect and to control room temperature, lighting, door/window frame heaters and humidity, and to transmit information and alarms regarding the room temperature, lighting, door/window frame heaters and humidity of walk-in refrigerators, freezers, and cold-room compartments, namely, temperature controllers for walk-in refrigerators, freezers, and cold-room compart...

Metal windows