Generalaire GFX3 Automatic Digital Humidistat. Also known as Part # 7050 - Replaces model E2. The GFX3 Humidistat provides automatic control of your whole house humidifier and a digital readout. It can be duct or wall mounted. In automatic mode - the GFX3 will adjust the humidity in your home based on the outdoor temperature, lowering the humidity in cold weather to reduce condensation. The GFX3 can be operated in Manual Mode to control humidity to a specific relative humidity. Includes: GFX3 Digital Humidistat, Duct Mount Backplate, Wall Mount Backplate, Outdoor Temperature Sensor, Mounting screws with wall anchors

• Voltage: 18-30 VAC, 60Hz
• Switching Load: 1 amp max at 30 V
• Outdoor Sensor: max 200 ft.
• Auto Mode Control Range:10%-60%RH / Outdoor Temp Limit: -10F
• Manual Mode Control Range: 10%-75% RH
• Accuracy: + / - 3% RH
• Accuracy Indoor Temp: + / - 2 degrees F
• Accuracy Outdoor Temp: + / - 2 degrees F
• Dimensions: 3.5" X 3.5" X 1.25" (2" Deep including probe extension).