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Product Name: DS18B20 Thermal Probe Sensor
Model: DS18B20
Length: 10 Meter / 32.6Ft
Probe size: 6 x 50 mm(Diameter*Length)
Power supply voltage range: 3.0V to 5.5V
Temperature measurement resolution: ±0.06℃
Output signal form (DQ): digital encoding output
Sensor insulation performance (500V DC test): single insulation resistance ≥ 100Ω
Voltage resistance (1500V AC, 5S, 0.5mA): no breakdown
Waterproof performance: IP68
Operating temperature range: -55℃~+125℃
Accuracy range: -10℃ to +85℃:±0.5℃
Description：
DS18B20 Waterproof Temperature Sensor: The probe uses high-quality 18B20 temperature sensor chip,high quality stainless steel tube packaging,the probe chip whose pin is separated by shrinkable tube can prevent short circuits.
Widely Application: This waterproof DS18B20 temperature sensor is applicable to thermostatic control, industrial systems, thermometers, any thermal system etc. This is suitable for refrigerators, warehouses, storage tanks, telecommunications room, power room, cable trunking, etc.
Package contents:
1 X DS18B20 Waterproof Temperature Sensor Thermistor Temperature Controller Length 10 Meter / 32.6Ft with Probe
Customer
Reviewed in the United States on January 7, 2025
MCCOZY WiFi Temperature Controller Sensor Module. Instructions said this product could be used to extend sensor length to 16 ft. Did not work with Smart Switch.
Akom
Reviewed in the United States on September 5, 2024
Working fine. I didn't trust the waterproofing so I encased the whole sensor end in hot glue and shrink wrap. The last one I got from China lasted 8 months in my hot tub. Hopefully this one will last longer.
Wayne Scott
Reviewed in the United States on July 3, 2024
Relatively heavy cable which will lay flat. Good heat shrink sleave on the probe. Works fine.
Engineer dude
Reviewed in the United States on October 10, 2024
I've used many DS18b20 sensors for several years. Here's the scoop in general, and on this one in particular.In general, Dallas Semiconductor invented this sensor. That's the DS of DS18b20. You can still get authentic DS18b20 sensors, but they cost a good bit more. Most of what you're going to find out there are clones, most of which work pretty well, but quality control and even internal features are often iffy. If you can live with that, the clones are generally pretty cheap (as in inexpensive).The circuit board shown in the included photo has a bare DS18b20 device soldered to the board and this Ferwooh sensor connected via the screw terminals. One screenshot shows the temperature readings when I was blowing on the Ferwooh sensor, causing it to read 84.4 degrees. The sensor soldered to the board was at room temperature. In the other screenshot, however, I had placed the Ferwooh sensor directly touching the one on the circuit board (shown in the photo) and left it there for a couple of hours. There should be virtually no difference in temperature. However, as you can see, the two devices are reading about a full degree apart. Which one is off? Hard to say, maybe both.Side note: if you were to disassemble the Ferwooh device, inside the metal can is simply the exact same type of transistor-looking sensor that I have soldered to the board in position U1. The metal is only for physical protection. Also, these devices communicate digitally. The length of the cable in no way affects the temperature readings reported by the device.It's been a while since I've dived deep into the documentation, but I believe there are registers inside the device that you can write in order to configure a temperature correction, or a bias. At least you can on the true Dallas Semiconductor ones. That's the type of internal feature that may or may not be present in the cheaper clones. I haven't confirmed whether that's available on the Ferwooh device.In the end, these clone devices are generally good for measuring temperature TRENDS and CHANGES, even if they're not so good at measuring ACTUAL temperature due to a bias. It's the difference between accuracy and precision... not to be confused.If that's something you can live with for your application, I'd be glad to recommend this device. For me, it works well enough, and the 10m cable allows me to run the sensor far into the attic or outside away from the house if I want. If you need instrument-grade accuracy AND precision, you might consider something else.
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