Contact Us Wi-Fi Data Logger HMT140 for monitoring temperature, relative humidity, current, voltage & door contacts The Vaisala HMT140?Wi-Fi data logger is designed for humidity, temperature and analog signal monitoring in cleanrooms, warehouses, freezers, laboratories, blood banks and other life science applications. This battery-powered device simplifies installation and eliminates the need for power or network cables. Combined with viewLinc monitoring software, the HMT140 ensures continuous historical and real-time data with reliable remote alarming. Data Logger Selection Guide? Features Quick and easy Wi-Fi connectivity to viewLinc monitoring software Connectivity provided through your existing Wi-Fi network Autonomous operation and local alarms ensure alerting capability regardless of network connectivity Local data storage provides continuous fail-safe operation - even during power or network outage Two inputs for voltage, current, contact, RTDs or temperature & RH Accurate and reliable multi-signal measurements from industry best sensors IP65 (NEMA 4) rated housing is resistant to dust and chemicals Traceable to SI units through national metrology institutes ~ 18-month battery life Optional LCD display + Show more Key Benefits Easy to install and relocate Wireless communication utilizes existing Wi-Fi network and is ideal for facilities without available wired infrastructure and for applications in which measurement points move regularly. Internal data storage Onboard memory stores data during a power outage or network downtime so no data is ever lost ensuring gap-free records. The logger’s history is always transmitted to the viewLinc monitoring system once communication is restored. Interchangeable temperature/RH probes for easy field calibration The HMP110 digital humidity and temperature probe is field replaceable and contains all calibration details. Monitoring system viewLinc's event log will record any sensor swap-outs, ensuring your audit trail is complete and compliant. Watch the video Vaisala viewLinc continuous monitoring system Downloads Datasheet: HMT140 Wi-Fi Data Logger for Multiple Environmental Parameters (147.25 KB) Manual: HMT140 User Guide (3.65 MB) Manual: HMT140 Multilingual Quick Guide (4.37 MB) Order Form: HMT140 Order Guide (119.03 KB) Application Note: Safeguarding Cryopreservation - Liquid Nitrogen Monitoring and Alarming (204.89 KB) Brochure: HMT140 Wireless Temperature and Humidity Datalogger (150.17 KB) Brochure: Probe replacement service (1.41 MB) Success Story: Success Story - FUJIFILM Toyama Chemical Co., Ltd. (251.98 KB) Success Story: Continuous Monitoring System Success Story with Teva Pharmaceuticals (354.16 KB) All downloads Related Products & Applications viewLinc Monitoring, Alarming, Reporting Software viewLinc Software Read more vNet Power over Ethernet Interface vNet PoE Interface Read more vLog Mapping Software vLog Software Read more Search for products Instruments for Industrial Measurements Read more Need support? Need to calibrate? Sign up for news Contact Us