3-5 Day Lead Time
The Thermalarm II is an adjustable thermometer switch which can be set to any temperature between 20 and 110 degrees Fahrenheit. When temperatures reach your set point the switch will close activating an alarm of your choice which you have wired to the switch.
A simple, low-cost, and reliable way to setup temperature alerts in your greenhouse.
PH-200 Professional PH Meter
Waterproof Cord Connector for Thermostats
Metal Greenhouse Bench Top Frames
EC Calibration Solution 20ml 1000PPM - 20 Pack
#14 x 1-1/2" 410 Stainless Steel Flat Head Tek Screws for fastening Plastic Bench Tops to Metal Frames - 100 Pack