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Transmitter for 4–20 mA analog signal:

• Bidirectional HF link in the 2.4 GHz band according to IEEE 802.15.4; built-in antenna

• Optimal reliability Mesh network connecting all transmitters Up to 8 hops possible to reach the receiver
Dynamic reconfiguration based on the environment Transmission rate > 99.999%

• 4–20 mA analog input + ambient temperature measurement
• Long battery life > 2 years with 4 standard AA batteries at a 60-second update rate
• Scalable – Up to 32 transmitters per network

The TNL120mA is a standalone, waterproof data acquisition unit capable of transmitting a 4–20 mA signal via a wireless
connection; it can form a mesh network of up to 32 transmitters.
Measurement data is made available via the Modbus TCP protocol on the SML160mA receiver.

• EML120:
– RF transmitter
– 1 to 16 thermocouple inputs
– 1 to 16 0–4–20 mA inputs
– battery-powered
– 200-meter range in open field
– programmable transmission rate

• RML120:
– HF receiver
– up to 16 analog outputs 0…4…20 mA
– DIN rail mounting
• Applications: – Rotary kilns, – wastewater treatment plants
The EML120 / RML120 transmitter-receiver set enables the transmission of temperature measurements via
radio link in applications without an auxiliary power source; adjusting the transmission rate allows
, depending on the application, to prioritize either response time or battery life.