$3.30 each
National Semiconductor # LM34DZ. Precision integrated circuit temperature sensor whose voltage is linearly proportional to the Fahrenheit temperature. TO-92 package. Operates on 5 - 30 volts. Requires no external calibration or trimming to provide accuracies of 1 degree F at room temperature. Operates on +32 to +212 degrees F. Spec. sheet available.
Spec sheet available in PDF format.
Average Customer Review:  (6 Reviews) Write A Review

Customer Comments

Average Customer Review:  (6 Reviews) Write A Review

A customer from chico, northern california
nice temperature sensor
just the thing for remote air temperature sensing.
put it at the end of some thin 3 conductor wire (2 pair phone cord) attach a 9v battery and voltmeter, and you are done!

A customer from NJ USA
mislabeled LM34s
As another customer already noticed, some LM34s seem to be actually mislabeled LM35 which produce an output proportional to the temperature in degrees Celsius. Eight of ten sensors I ordered were of that kind. Check your order. EDITORS NOTE: We did receive a shippment of LM34 which appeared to have some mismarked. They have been replaced with the proper part.

A customer from Austin, TX
Great little sensor
I'm using this to activate a fan that cools an audio amp I have in the garage. This thing works great.

A customer from FREELAND, MI US
Good stuff
Bought this to mess around with and i hooked the supply up wrong and almost cooked it but its still working fine. nice and sturdy for the new people out there. also its very accurate from what i can tell.(compared to kitchen thermo and a thermostat i have around here)

A customer from Southern California USA
Good news, bad news...
I recently purchased some of these for a project. The first one did not read correctly so I tried another and another. A few of them do read very accurately. I have determined that the rest of them are mis-marked LM35's and are reading celsius very accurately. Great price if you can use them anyway.