Home / TP-USB Optical Probe: Reliable Meter Data Reading from -40°C to +70°C
#Product Blog · May 21, 2026 · About 4 minutes
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TP-USB Optical Probe: Reliable Meter Data Reading from -40°C to +70°C

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Tespro

Meter data collection does not always happen in comfortable indoor environments. Power grid inspectors may need to read electric meters at outdoor substations in minus 30‑degree winter conditions, and heat utility teams may need to record thermal meter readings in exchange stations where summer temperatures exceed 60 degrees Celsius. Under these extreme conditions, ordinary data collection devices often fail due to hardened cables, chip malfunction, or probe failure. Tespro TP-USB optical probe is designed specifically for these harsh environments. It uses high‑quality wide‑temperature cable materials, and the entire probe operates normally across a temperature range from minus 40 degrees Celsius to plus 70 degrees Celsius. Neither the bitter cold of northern winters nor the scorching heat of southern summers will compromise the reliability of its data reading.

The quality assurance of the TP-USB optical probe comes from Tespro's nearly twenty years of commitment to a quality‑first philosophy. The probe housing is made from 100 percent pure PC material, offering excellent weather resistance and impact strength. The strong magnetic adhesion uses N40 or N52 grade neodymium magnets, providing strong and stable holding force that keeps the probe firmly attached to the meter's communication port even in vibrating environments. The cable is soft but firm — flexible enough for easy field operation yet strong enough to resist pulling and wear during daily use. The protection rating reaches IP54, effectively preventing dust ingress and water splashes from any direction, further enhancing reliability in harsh field conditions.

How long can the TP-USB optical probe's built‑in battery support data reading?
The TP-USB optical probe does not have a built‑in battery. It draws power directly through the USB interface from the connected computer or device. This approach eliminates battery depletion concerns — the probe works whenever a USB port is available — and requires no periodic battery replacement, reducing maintenance workload and long‑term operating costs.

Beyond hardware quality, the TP-USB optical probe also delivers excellent electrical performance. It uses the original UK‑based FTDI USB chip, globally recognized as the best USB bridge chip, providing not only plug‑and‑play compatibility across all operating systems but also stable and reliable data transmission. The probe supports a wide communication rate range from 300 to 115,200 bps, and its transparent transfer mode allows good adaptation to various meter communication protocols. The optical sensor uses infrared light with a wavelength of approximately 900 nm, meeting the standard requirements of mainstream meter infrared communication ports. For technical teams that frequently perform meter data collection outdoors, in industrial sites, or under extreme climate conditions, the wide‑temperature design and rugged quality of the TP-USB optical probe mean fewer device failures, lower replacement frequency, and higher on‑site work efficiency.

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