Thermometer comparison

This is an alphabetically ordered table of various thermometers, i.e. temperature loggers with PC connectivity via USB, RS232, and so on. We do not list devices without PC logging functionality, as those are not really useful for sigrok.

This page lists commercial and non-commercial devices with a short overview of their capabilities. We list all kinds of devices here, not only those supported by sigrok.

You should not use the information here as the sole source for any buying decisions, this is just meant for informational purposes. Please carefully check the vendor websites if you intend to buy any hardware.

Device	Type	Measured quantities	PC interface	PC interface chip	PC protocol	Architecture/chip	Live acq.	Memory (#records)	Resources	Price
Center 304 Note 4	handheld	4x temperature	RS232	—	9600/8n1 custom	?	yes	—	?	$162
Center 309Note 5	handheld	4x temperature	RS232	—	9600/8n1 custom	?	yes	16000	1	$253
CEM DT-171Note 1	USB dongle	temperature, humidity	USB	?	?	?	?	?	?	?
CEM DT-171Note 2	USB dongle	temperature, humidity	USB	?	?	?	?	?	?	?
CEM DT-172Note 3	handheld	temperature, humidity	USB	?	?	?	?	?	?	?
Dostmann TC309Note 5	handheld	4x temperature	RS232	—	9600/8n1 custom	?	yes	16000	1, 2	€185
FreeTec NC7004	USB dongle	temperature, humidity	USB	?	?	?	?	?	Driver	?
General DT304 Note 4	handheld	4x temperature	RS232	—	9600/8n1 custom	?	yes	—	?	$179
General DT309DLNote 5	handheld	4x temperature	RS232	—	9600/8n1 custom	?	yes	16000	1	$251
Lufft OPUS 10 THI	handheld	temperature, humidity	RS232	?	?	?	?	?	1	€357
Omega HH309Note 5	handheld	4x temperature	RS232	—	9600/8n1 custom	?	yes	16000	1, 2, SW	?
Omega HH309ANote 5	handheld	4x temperature	RS232	—	9600/8n1 custom	?	yes	16000	1, 2, SW	€185
PeakTech 4955	handheld	IR-video-/type-K-temperature, humidity, dew point temp.	USB	?	?	?	?	?	?	?
Pyle PTHDL150	USB dongle	temperature, humidity	USB	?	?	?	?	?	?	$151
RDing TEMPer	USB dongle	temperature	USB/HID	Tenx TMU3101MS	custom	Fairchild FM75	?	?	?	?
RDing TEMPer Gold	USB dongle	temperature	USB/HID	?	custom	NXP LM75A	?	?	?	?
RDing TEMPer1	USB dongle	temperature	USB/HID	?	custom	?	?	?	?	?
RDing TEMPer1K2	USB dongle	temperature	USB/HID	?	custom	?	?	?	?	?
Sper Scientific 800023 Note 4	handheld	4x temperature	RS232	—	9600/8n1 custom	?	yes	—	1	$172
Sper Scientific 800024Note 5	handheld	4x temperature	RS232	—	9600/8n1 custom	?	yes	16000	1	$298
Tecpel DTM-319Note 5	handheld	4x temperature	RS232	—	9600/8n1 custom	?	yes	16000	1, FAQ, 2, 3	€145
Voltcraft DL-120THNote 1	USB dongle	temperature, humidity	USB	SiLabs F321	?	Sensirion SHT*	?	?	?	?
Voltcraft DL-121THNote 2	USB dongle	temperature, humidity	USB	?	?	?	?	?	SW	€73
Voltcraft DL-140THNote 3	handheld	temperature, humidity	USB/serial	SiLabs CP2102	?	TI M430F427, Sensirion SHT*	?	?	?	?
Voltcraft K204 (cheap)Note 4	handheld	4x temperature	RS232	—	9600/8n1 custom	?	yes	—	list	€114
Voltcraft K204 (expensive)Note 5	handheld	4x temperature	RS232	—	9600/8n1 custom	?	yes	16000	list	€213
Voltcraft PL-125-T2USB	handheld	2x temperature	USB	?	?	?	?	?	?	€69
Voltcraft IR1000-50CAM	handheld	temperature (IR), humidity	USB/mass-storage	?	—	?	?	?	1	€349
UNI-T UT325	handheld	2x temperature	USB	?	?	?	?	?	1, 2	?

Notes:

¹ Voltcraft DL-120TH = CEM DT-171.
² Voltcraft DL-121TH = CEM DT-171 (?)
³ Voltcraft DL-140TH = CEM DT-172.
⁴ Voltcraft K204 (cheap version) = Center 304 = Sper Scientific 800023 = General DT304.
⁵ Voltcraft K204 (expensive version) = Center 309 = Sper Scientific 800024 = Tecpel DTM-319 = General DT309DL = Dostmann TC309 = Omega HH309 = Omega HH309A.