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SRT-L70 Temperature Meter Mounted on DIN Rail 35 mm

The power supply supports 19V ÷ 50V DC, 16V ÷ 35V AC, or 85 ÷ 260V AC/DC, consuming a maximum of 6.5 VA/W. It features an adjustable brightness red LED display, measuring temperatures from -100°C to 600°C with 0.1°C resolution. The device offers 0.1% accuracy at 25°C, three REL outputs, and a stabilized 24V DC power supply output. Communication is via RS-485 with Modbus RTU. It operates between 0°C and +50°C, offering IP 20 protection, and is DIN rail mountable with dimensions of 72 x 91 x 59 mm, weighing a maximum of 213 g.

SRT L70 Temperature Meter Product Parameters

  • Output Signal: 3 x REL outputs (2 NO, 8A/250V AC, 1 NO-NC).
  • Accuracy: 0.1% @ 25°C ± one digit.
  • Electrical Connections: Power supply 19V ÷ 50V DC, 16V ÷ 35V AC, or 85 ÷ 260V AC/DC.
  • Process Connections: Thermoresistance input for Pt100, Pt500, Pt1000.
  • Media Compatibility: Operating temp. 0°C to +50°C, storage temp. -10°C to +70°C.
  • Special Features: Red LED display, adjustable brightness, RS-485 communication, IP 20 protection, DIN rail mount.


Product Highlights

The SRTL70 temperature meter is a versatile device that offers a Pt100/Pt500/Pt1000 input, making it compatible with various temperature sensors. Its measuring range spans from -100°C to +600°C, providing precise temperature readings with a resolution of 0.1°C. The meter’s nonlinear sensor characteristic is fully linearised, ensuring accurate and reliable measurements. An additional advantage of this device is its automatic recognition of 2, 3, and 4-conductor connections, allowing for easy setup. With the RS-485 interface, users can access the meter’s inner registers, enhancing functionality and customisation. The SRTL70 also includes three relay outputs, two normally open (NO) and one normally open/normally closed (NO-NC), offering flexibility in controlling external devices. Its modern switched-mode power supply (SMPS) enables operation with a wide range of supply voltages. Configuring the meter is convenient, as it can be done either through the local keyboard or via the RS-485 communication port using the free S-Config software. The SRTL70 temperature meter provides a comprehensive solution for temperature measurement and control applications.


  • Temperature meter mounted on DIN rail 35 mm
  • Input: Pt100, Pt500, Pt1000
  • 3 relay outputs, load capacity 8A
  • RS-485 / Modbus RTU
  • Power supply output: 24V DC
  • Automatic recognition of 2, 3 and 4-conductor connection
  • Signal peak value detection
  • Free configuration software S-Config

To download the latest datasheet click here: SRT L70

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