Review on BN-LINK Digital Temperature Controller - Efficient Heating Cooling Thermostat Controller for Reptiles, Aquariums, Homebrewing, and Fermentation by Trevor Blazis

Nice little box but a bit odd in the programming and instruction symbols for each function. Be sure to read, understand and test before use, especially the alarm function. When an alarm goes off, the device turns off your device, which is actually worse for chickens. Low temperature, an alarm will sound and the unit will turn on the heat lamp until it resets. The temperature reaches a high level and an alarm sounds, the fan turns on until the device is reset. A simple fix is to not set alarms or set them to total failure. A really nice feature is the adjustable differential, so your devices can be programmed to turn on and off with different degrees of separation. There are also a few symbols on the display that are not in the manual. ? I haven't seen IDK or YFU though