Hioki LR8514 Wireless Humidity Logger

The LR8514 is a mini wireless data logger designed to track temperature and humidity with high precision across two input channels. Each channel supports both a temperature sensor and a humidity sensor, allowing simultaneous readings in two different locations. Temperature measurements span from about -40 °C to +80 °C with a resolution of 0.1 °C; humidity from 0 % to 100 % RH with a resolution of 0.1 % RH. The device stores up to 500,000 data points per channel, ensuring long term monitoring even if wireless communication is not always active. It offers Bluetooth connectivity for downloading data to tablets or phones; also works with a logging station for real-time visualization. Power can be supplied in multiple ways: two AA batteries, an AC adapter, or an external DC source. The logger supports a variety of recording intervals (from sub-second to minutes), includes alarms, data scaling, display of current/max/min/average values, and power-saving features to extend battery life. Its durable, compact build allows installation in constrained or hard-to-access locations, and isolation of sensors ensures resistance to environmental interference.

Features

• Two channels that each support both temperature and humidity measurement, enabling comparison between two locations.
• Measurement ranges: temperature -40 °C to +80 °C, resolution 0.1 °C; humidity 0 % to 100 % RH, resolution 0.1 % RH.
• Humidity accuracy of about ±3 % RH (in moderate temp/humidity ranges), and temperature accuracy ±0.5 °C in mid-range; with added error outside those ranges.
• Memory capacity of about 500,000 recorded data points per channel.
• Recording interval options from 0.5 seconds up to 60 minutes, depending on how frequent data is needed.
• Multiple power supply options: two AA batteries, external DC, or AC adapter; supports power saving (e.g. disabling wireless when not needed).
• Bluetooth wireless communication for data download to mobile devices or PCs; can also be used with a logging station for real-time monitoring.
• Display of current measurement, date/time, number of data points, max/min/average values.
• Functions like alarms, scaling (adjusting sensor readings), recording operation hold, prevention of erroneous operations, and comment tagging.
• Compact footprint and light weight; rugged enclosure suitable for installation in tight or hard to reach or moving locations.

Includes

• CD-R ×1 (Instruction Manual
• Logger Utility, Wireless Logger Collector)
• Measurement Guide ×1
• Caution for Using Radio Waves ×1
• AA alkaline batteries (LR6) ×2