PEMENOL 12V Red Fahrenheit Digital Temperature Meter -76F~999F LED Display with Industrial Grade 0.5m K-Type Thermocouple Temperature Sensor M6

I used this as a cylinder head temp gauge for a two stroke scooter. I had to power it externally with a nine volt, if I used the scooter’s 12V, it’d freak out every time the thermocouple touched the frame ground. Once I isolated the power tho it was fast and accurate, one of the few temp displays that ranges up to 400+ Fahrenheit. Decent quality for the money. Bright!

Works great ! Have had no issues with it.

My friend said "That's cool, I want one". He isn't as picky about things as I am, but this time he was right to want one.Functionally this temperature display unit has some great points, mainly that it is accurate, which means the company took the time to match the sensor to the display unit, that quality doesn't happen through luck, it happens through caring for their customer.The sensor probe uses a moderate length stainless steel protective outer cover which is shrink wrapped to wires at the display side and terminates into the probe at the sensor side. The sensor/probe has a threaded sleeve that permits a solid contact to the material being measured, being this way a person would be able to glue a bolt to the contact area and thread the sensor into that until the probe made contact.The display itself has low power needs and is easy to read at a glance in most lighting, although direct sunlight made it a little hard to read. Mounting is made easy by having a case that is standard size and can snap into most instrument panels.

I mounted it in a box (jigsawed a hole in plastic box to mount it) for a readout of my water heater temperature for a solar PV conversion on the heater. Comes with a K type probe with some small threaded sensor end, I bought another probe (https://www.amazon.com/gp/product/B07QN452PN/ref=ppx_yo_dt_b_asin_title_o02_s01?ie=UTF8&psc=1) with a 1/2" male pipe thread, then screwed that into a 1/2" female adapter in a T in the outlet line of the heater. Had no place to get the probe directly IN the tank, so this is the next best place. Run the water 20-30 seconds so hot water out of the tank passes the probe, and you get a true reading of the tank temperature.Gauge requires 5-28vDC to operate it, I used a 12vDC transformer (wall wart) already in the box to operate a relay for the solar current.I set the heater up (28gal undercounter model) for the lower element to run off solar (36v 1200 DC element https://www.amazon.com/gp/product/B018S4AN42/ref=ppx_yo_dt_b_asin_title_o03_s02?ie=UTF8&psc=1) and put a 120vAC 1500w element in the top hole so if solar isn't giving me enough power to heat the amount of water I want, I can simply flip the toggle switch to turn on the AC element and heat water.

Not Accurate at all. Wildly fluctuating temp readings. Initial power up shows temp +/- 3 degrees f... then temp will incrementally climb, then hang at 40+degrees above ambient temp, then drop incrementally.I've tried 3 different K t-couples, and 2 different J t-couples .. and finally twisted pair - 22awg wires tired together -- no change in temp reading, all different lengths, nothing reads accurate.Temp on meter does not match Laser Temp or Fluke Temp Probe. very disappointing, all I needed was to read ambient outside air. **Sigh**

Purchased three of these (two single displays, one dual display). Installed all three units in a small plastic enclosure. Purpose: Used to monitor temperatures at various locations of my wood gasification boiler heating system. Displays can be views remotely via a small security camera pointed at the enclosure.Yes, I like them. Regards.

Have an oven that will display the temperature you have set, but won't display the actual temperature it's achieved. Got this unit, paired it with a DC power supply (https://www.amazon.com/ALITOVE-100-240V-Converter-Security-Surveillance/dp/B07VQHYGRD). Used high-temperature tape (https://www.amazon.com/Hxtape-Temperature-Polyimide-Printing-Soldering/dp/B07DBZ1SW6) to attach the probe cable to the side of the oven near the top, with the probe itself in the air a little bit away from the wall. I just plug in the power supply and it works great, is easy to see, and provides the feature that should have been built into the oven in the first place.

Comes with all the connections. Works well.