wireless temperature and humidity data logger

We’ve seen reliable performance down to -30°C with our lithium battery configuration, provided the housing isn’t directly exposed to heavy frost buildup. For signal-challenged areas, LoRaWAN models with external antenna options often beat Wi-Fi. We can also set logging to local storage and forward data in batches once the device moves into a warmer zone if that fits your process.

Most Kingmach wireless loggers use field-replaceable AA lithium or alkaline cells—you don’t need special tools or a return authorization. The battery compartment is sealed with an O-ring to keep the IP rating intact, and we ship with a sheet showing proper tightening torque. Just don’t mix old and new cells, or you’ll cut battery life in half.

We publish individual sensor accuracies separately because the combined uncertainty depends on the measurement range you’re actually operating in. For a typical -20°C to 50°C ambient with >50% RH, the dew point calculation adds about 0.5–1.0°C of extra error beyond the sensor specs. Our support engineers can walk you through a quick spreadsheet that maps your operating window to expected total uncertainty.

You’re not forced into the cloud. Wi‑Fi models can act as Modbus TCP servers on your local network, broadcasting sensor values to a SCADA host. If you need a physical link, we also have RS485 output on request, with Modbus RTU protocol. For cloud-to-SCADA, you can pull data via our MQTT broker into Ignition or similar platforms without middleware.

It really depends on the quantity and whether we have similar variants already qualified. For a standard 1.5‑meter probe instead of the default 200 mm, we often ship within three weeks after drawing approval. Exotic ranges like -70°C cryo probes take longer because we need to source and test the element. Tell us your target spec early, and we’ll give you a realistic date instead of stretching the truth.