IHC-200

I have read some other reviews about how difficult this was to setup. I found it very easy and familiar to other instruments (temperature sensors, flow meters, pressure sensors, etc.) that I have setup in an industrial processes. Read the owners booklet, and go thru the menu and make your selections. I thought it was very well explained. I especially like the ability to adjust/calibrate the relative humidity indication to make it accurate. You can change it plus or minus 10%. I used a wet/dry bulb thermometer instrument (built one with parts here on Amazon) to read an accurate current (real world) relative humidity (RH) to use to match this instrument to. However, right out of the box, the Inkbird matched with my wet/dry bulb thermometers were indicating for RH so no initial calibration was needed (zero for this value in the menu settings is no offset/adjustment). You can use this instrument for both decreasing humidity (connecting it to a dehumidifier) or for increasing humidity turning on a humidifier). OR even for controlling the desired humidity of an environment by connecting it to both, and the instrument will turn on the humidifier when the RH is below what you set, and it will turn on a dehumidifier when the RH is above what you set. Be sure to have enough of a gap between your upper and lower limit to prevent your equipment from cycling. This is called the deadband/hysteresis. When I do a product review, I always like give the pros and the cons. For this one I had to be really picky to find anything bad: It uses the initials SV which stands for Setting Value. Typically instruments use SP instead, which stands for Set Point The 3 variables in an instrumentation control system are: PV (process value) the value of the temperature; pressure; flow; RH that the instrument is indicating. SP (set point) the value you want your PV to change to. CV (control value) the signal the instrument is sending to the device you are using to change your PV For example... your house heating thermostat. The PV is the room temperature The SP is what you have the thermostat set for. (like you want your house to be 68 degrees) The CV is the signal your thermostat is sending to your heater. It could be 0 or 1 (on / off) which would turn your heater on or off. Note: some modern home furnaces have variable heat. As the temperature in the room (PV) is farther away from your SP it makes the furnace fire more (like turning up the flame on a gas cooking range)

This is one of the best products I've bought for environmental control inside. I like to control precisely the humidity in spaces where I do water damage repair. Most devices, such as the Sonoff TH16 Wifi Temperature and Humidity Sensor seem to only sample once every 5 minutes or so. THERE IS A BIT OF A LEARNING CURVE - ABOUT 10 MINUTES. This device samples seemingly many times a second (I can't find the spec but when I dump a humidifier to it, it counts up right away). The options are essentially endless, including a delay for the compressor on a dehumidifier, which can be damaged if toggled while under full pressure. Also you can adjust what RH it is reading compared to actual (if it isn't spot on, you can make it be). Additionally, you can decide how much "float" you have before you add humidity or remove it (each has an individual setting). Avoid the Sonoff TH16 Wifi Temperature and Humidity Sensor if you care to sample more than once every 10 minutes or so. I've had two of them and they both failed within 2 months of use. This item is the real deal and the extra cost goes towards it being pre-wired, functional, and well built rather than the Sonoff which is tricky (to say the least) fitting wires under the screw on wiring cover. The sonoff also fails often. I bought two that both failed within 2 months of use each. I haven't written my sonoff review yet as I don't like slamming companies but they need to be at this point.

Have had this product for many years now. Still works like its new.

Giving this 4 stars with conditions. The unit is a must have for a grow room and not much else available at a reasonable price. After using this unit thru one grow (4 months) and starting the next it started malfunctioning saying humidity was 22% when it was actually 84% by hygrometers in room. After reading found that many had problem with sensor going bad. Amazon sells a replacement sensor or probe for $14.99 so didn't have to buy a whole new unit for $42.99. This is the review on the replacement probe I posted so you can see what is involved in replacing it. This come just like the picture with 4 wires sticking out of sensor which means that the housing doesn't clamp on the wires because the outer insulation is not there. I took apart the old sensor using a razor knife to gently pry apart housing but still managed to crack it getting it apart. The old wires actually have a crimp fitting on the end that plugs into the unit (4 of these). Using hemostats was able to unplug them hoping to reuse all the old wire. Thought I should try plugging them back in before trying to disassemble new unit. They didn't want to plug back in very well so at this point just decided to leave new unit as is and not disassemble and just splice wires. Wires are tiny and hard to strip but doable. Soldered connections and used shrink tubing and electrical tape to finish the job. All worked out and replacement is working fine. From what I have read these sensors don't last that long and glad they sell the part for 15 bucks instead of having to replace the whole controller for 42.99. Would be nice if they had the sensors set up with an outside plug so replacing would just amount to unplugging old one and plugging in new one. The inkbird IHC-200 is a must have for a grow room and I have a complete spare unit in case of a malfunction. Will probably buy another sensor to have on hand in case they decide to quit selling replacement probes.

Functions properly. Humidity controls are easy to set and calibrate if needed. High quality water resistant plastic keep it safe. A couple things I would change would be the ability to turn off the humidity high or low alarm and to make work 2 function have a timer function for set time on and off versus humidity trigger. Other than that it’s a good piece of equipment.

These are fantastic! I use these for climate control for my Boa Constrictor and they've made my humidifiers a lot more efficient in terms of water consumption and I bought the temperature control version from the same company, so energy efficient as well. Most importantly however, is that they've made the climate CONTROLLED. These allow me to keep the climate as consistent as I'd like! Pros: Two outlets for two devices, one for a humidifier and one for a dehumidifier. This allows you to specify a bottom limitation as well as an upper limitation. Within the range you provide, neither device receives power. Above or below the range, a specific clearly labeled outlet is given power appropriately. Another setting is given for alarms if you'd like them, VERY useful if, like me, your humidifier becomes efficient enough that you only have to refill it every few days. The alarm is loud enough to wake you up if it's in the same room, or probably the next room even. Can be heard over most ambient noise in other floors of the house if you're awake. This has truly taken a lot of hassle out of pet maintenance for me. Cons: If like me you have little use for a dehumidifier, you'll quickly wish the system had a setting for two humidifiers instead of 1 of each. Or if you're in the opposite situation as well. But, it's definitely not like they aren't clear as to how it works, so if this is a problem for you, there definitely shouldn't be any surprises. All in all, I liked it enough that I bought a second one when I got a second snake, and I highly recommend this device and this brand.

I have struggled to find a home humidifier with an accurate humidistat, I have a relatively narrow range I need, both for my guitars, and for my sinuses, I want it at just below 50% RH, as high as possible but well below the mold threshold of 55%. This one does it well. It helps to locate the sensor as far away from the humidifier as possible to avoid the humid zone around it when it is on. I have a few calibrated humidity meters and used them to calibrate the inkbird, which it turned out was reading about 4% RH high, this is more than I would have liked to see from a device like this, but once calibrated it works really well. I am controlling a Honeywell warm mist (boiler-type) unit, which has a hard switch for low or high, I leave it on high and let the inkbird cycle it on and off. I set it for 48% RH with a +/- 1 cycle, so it goes on at 47% and goes off at 49%. I've been watching it for a while now and it is very precise, cycles on and off exactly as it should.

I required this equipment to convert a refrigerator into a curing unit for Italian Salami as I do not have a cold cellar in my house and such a curing unit will allow me to make smaller batches of salami any time of the year as opposed to only in the dead of winter. The units work great but you have to be technically inclined to follow the instructions. If you are not technically inclined I strongly suggest that you get some who is to set it up. Both units require setting up. To set up you also need accurate data. I will use mechanical thermometer and hydrometer to get initial set up data. Bottom line - I am very pleased with the items, the price, and the delivery. The online purchasing, which my children do on a regular bases, is rather neat. I think it might be the future but I must say that society started going down hill when they got rid of slide rules and scrapped the Avro Arrow.