When showcasing our recently built cattle panel greenhouse, we mentioned the challenge of temperature control. A reader said he’s successfully used digital thermometer system with several transmitters and a home station.
We take our readers’ experience seriously and after some research, determined the best product. The Gemitto two transmitter system had just what we were looking for plus a very respectable five star user rating.
Battery Operated – 7 AAA’s
You’ll need 7 AAA batteries and a fairly clear zone between the home monitor box and the transmitters. Our greenhouse covers just over 54 square feet and stands 7 feet tall. We placed one transmitter at mid height and another lower down.
The range may vary depending on obstacles. Our unit’s separation is about 60 feet. When first testing, a cinder block structure was in the way and the temps on the home unit kept blinking. We changed the home module’s position and both transmitters are now coming through steadily.
Multi-Transmitter Features
Features we like about the multi-transmitter system are:
- Convenience (No need to trek up to the greenhouse to check the temps)
- Wireless
- Clear digital readout
- A minimum/maximum temperature tracking over 24 hr period
- Alarm system can signal high and low temperature alerts
- All units are easily clipped or mounted
- Impressive signal range (60 feet)
- Displays Fahrenheit or Celsius
There are other models that have 3 transmitters, and some can measure humidity as well as temperature. Of course, the cost increases with each added feature.
We favor the more simple unit for now. It’s already saved us many steps and time by allowing us to monitor and adjust the greenhouse temperature to the “Goldilocks” zone of 50-70 degrees (F).
Wishing you great gardens and happy harvests!
G. Coleman Alderson is an entrepreneur, land manager, investor, gardener, and author of the novel, Mountain Whispers: Days Without Sun. Coleman holds an MS from Penn State where his thesis centered on horticulture, park planning, design, and maintenance. He’s a member of the Phi Kappa Phi Honor Society and a licensed building contractor for 27 years. “But nothing surpasses my 40 years of lessons from the field and garden. And in the garden, as in life, it’s always interesting because those lessons never end!” Coleman Alderson