LR8537 New Product in 2026
For engineers and maintenance teams who need reliable temperature measurement across multiple points, flexibility is just as important as accuracy. The Hioki LR8537 Wireless Thermistor Module is designed to expand temperature logging capability by enabling wireless multi-channel thermistor measurement when used with the Memory HiLogger LR8450-01. Hioki positions the LR8537 as a wireless module for temperature and resistance measurement, with support for up to 15 channels and a sampling rate as fast as 50 ms.
One of the LR8537’s biggest advantages is its focus on thermistor-based measurement. Hioki states that the module supports both temperature (thermistor) and resistance measurement, and can convert and display the temperature value for any thermistor. This gives users more flexibility than a logger limited to preset sensor types, especially in applications where custom thermistor characteristics or resistance-based sensing must be incorporated into the measurement workflow.
The module is also built to support practical wireless deployment. Hioki specifies that the LR8537 connects wirelessly to the LR8450-01 through the included Z3231 Wireless LAN Adapter, with a communication range of 30 meters line of sight over IEEE 802.11b/g/n. Hioki also notes that the unit includes 4 M words of communications buffer memory, which stores data during communication interruptions and resends it when the connection is restored. For users working in distributed setups or difficult installations, this helps improve data reliability without requiring a hardwired module connection.
Another important strength is channel density. Hioki lists 15 input channels, each using push-button type terminal blocks, with all channels isolated. The LR8537 supports thermistor temperature measurement using both the Steinhart–Hart equation and the B-constant (Beta parameter) equation, with 0.01°C resolution and a temperature range of −100°C to 300.0°C. For resistance measurement, the module supports ranges of 2000 Ω, 20 kΩ, and 200 kΩ with resolutions of 0.1 Ω, 1 Ω, and 10 Ω respectively.
The LR8537 is also built for demanding environments. Hioki states that it operates from −20°C to 55°C at 80% RH or less, and offers vibration resistance equivalent to JIS D 1601:1995 5.3(1), Class 1A (passenger vehicle). The module includes LED indicators for wireless connection, measurement status, error status, external or AC power, battery power, and charge status, helping users monitor system condition at a glance during setup and operation.
From a practical deployment standpoint, the LR8537 includes several useful accessories as standard. Hioki lists the Wireless LAN Adapter Z3231, AC Adapter Z1008, mounting plate, screws, and instruction manual as included items. Optional accessories include a carrying case and battery pack Z1007, which can charge while installed. These additions help support more portable or semi-permanent monitoring setups depending on the application.
A key point to note is that the LR8537 is not a standalone logger. Hioki clearly states that it cannot perform measurement by itself and requires the Memory HiLogger LR8450-01 separately. In return, that compatibility gives users access to the broader LR8450-01 platform, which supports up to 330 channels, isolated input, and measurement types including DC voltage, temperature, resistance, distortion, and CAN, with recording intervals as fast as 1 ms. This makes the LR8537 a useful expansion tool for larger modular data acquisition systems rather than a single-purpose standalone device.
For users who need flexible, wireless, multi-point temperature measurement based on thermistors, the Hioki LR8537 offers a practical solution. Its combination of 15-channel input, 50 ms sampling, wireless communication, and thermistor conversion flexibility makes it a strong fit for distributed temperature monitoring, environmental testing, and broader multichannel data logging applications.
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