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Waterproof digital temperature sensor DS18B20 with adapter module
Pull-up resistor included on the adapter module, connect directly to the GPIO for Raspberry Pi
Measure the temperature directly in places like water or soil, suitable for thermostatic controls, thermometers, industrial systems, etc.
Single-bus communication
Specifications:
Power supply: 3.0V to 5.5V
Operating temperature range: -55℃ to +125℃ (-67℉ to +257℉)
Accuracy over the range of -10℃ to +85℃: ±0.5℃
Cable length: approx. 1 m/ 39.4 inch
Size of stainless steel housing: approx. 6 x 50 mm/ 0.2 x 2 inch
Output : Red(VCC), Black(GND), Yellow(DATA)
Package includes:
6* DS18B20 temperature sensors
6* Adapter modules
6* Female to female jumper wires
Adam Howell
Reviewed in the United States on February 2, 2023
First off, this is a great sensor. They are famously durable. I have yet to compare their consistency in a test rig, but have had two running close to each other and simultaneously, and they were within 1° F (1.8 °C).I love the little carrier board that handles the pull-up resistance. I only wish it had a jumper to toggle "parasitic power" mode, and a low-power LED for when not using parasitic power mode.Having said that, the wires are at least two gauges too small for the screw terminals. About half of them would work on the first try. Of the remaining wires, I could get some of them to secure if I paid attention to where the screw ended up when fully tightened. Sometimes the screw would "lean" to one side or the other in the plastic block, leaving a spot where the wire could sit without getting a good connection.Those poor connections are easy to spot when it is the first wire you tighten down, because it comes right out. But if the poor connection is on the second or third wire, you might not notice that it is loose. And if it's the center wire, a gentle pull might not help you identify that it has a weak connection.So, I eventually crimped on my smallest ferrules, and then got a reliable connection (see attached picture). If I didn't have a ferrule crimper, I would probably solder three 18 gauge wires onto the ends of each sensor, and use those in the terminal blocks.
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