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Radio relay- Range 300 m
THR type

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Level control relay consisting of a THR radio receiver and a transmitter.
The transmittor, placed near the reservoir and connected to a level float, transmits to the receiver the signal to fill or empty by activating or disactivating the relay.
Power supply : 230Vac /9-30Vdc (possibility of accumulator or external battery).
2 logic inputs (E1 inversed, E2 standard).
1 analog input (THR420 only).
2 relay outputs (RL1, RL2).
1 analog output (THR420 only).
UHF 433 Mhz frequency .
Range: 1 km.
Antenna power: 400 mW.
Frequency: 433,92 Mhz.
Range: 1 km.
Input signal.
  • 1 level relay (Power 230V only).
  • 1 normal logic input.
  • 1 inverted logic input.
  • 1 analog input 4-20mA (THR420).
Output signal:
  • 2 relay outputs (250V 5A max).
  • 1 error output (250V 5A max).
  • 1 analog output 4-20mA (THR420).
Antenna : 50 Ω connector BCN.

Receiver:Power supply: 230 V.
Frequency : 433,92 Mhz.
Output signal:
  • 1 contact switch.
  • AC1: 10A-250Vac.
  • DC1: 1A -250Vdc.
Antenna: 50 Ω connector BCN.
Download the operating instructions for THR
Download the operating instructions for THRC
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