Signal Conditioners & Isolators

We offer three types of control relays from a range of brands including Phoenix Contact, ABB, Siemens and Omron.

If you're looking to control temperature, voltage, current or frequency, you'll find the products within monitoring relays. For all of your signal conditioning and conversion requirements, visit our signal conditioning range.

What is a control relay?

A control relay is basically an electrically operated switch.

How does a control relay work?

They work by opening and closing a switch to allow power to flow through a coil to conduct electricity. The coil does not actually come into contact with the switch during this process.

What types of control relays are available?

The three types of control relay are as follows:

  • Impulse relay - a type of latching relay that transfers the contacts with each pulse.
  • Monitoring relay - a protective control device for monitoring and receiving input signals, and outputting an alarm signal if a threshold is reached.
  • Signal conditioning - a device that converts one type of electronic signal into another type of signal.

What are the uses of a control relay panel?

Control relay panels are used for the control and monitoring of electrical equipment such as transformers, generators and circuit breakers in industrial systems and environments.

What is the function of an undervoltage control relay?

A relay will trip the breaker circuit if it detects an abnormality. An undervoltage (UV) relay will activate if the voltage is lower than a prescribed value, and stay like that until it reaches the necessary voltage.

Signal Conditioners
Signal Conditioners
Zener & Galvanic Barriers
Zener & Galvanic Barriers

977 Products showing for Signal Conditioners & Isolators

7 of 49
In Stock
EYC EYC DPT02 Series Signal Conditioner, Universal Input, Analogue Output, 253V ac, 85 V ac Supply
  • RS Stock No. 144-1340
  • Mfr. Part No. DPT02-D
Subtotal (1 unit)
TWD9,195.00(exc. GST)
TWD9,195.00/unit
Temporarily out of stock
RS PRO Relay, Current/Voltage Input, 12V Supply
  • RS Stock No. 325-327
Subtotal (1 unit)
TWD17.00(exc. GST)
TWD17.00/unit
Temporarily out of stock
Weidmüller ACT20X Series Signal Conditioner, Thermocouple, Current, RTD Input, Current Output, 19.2V, 31.2 V Supply,
  • RS Stock No. 902-8041
  • Mfr. Part No. 8965470000
Subtotal (1 unit)
TWD10,879.00(exc. GST)
TWD10,879.00/unit
Stocked by manufacturer
Phoenix Contact 2905623 Series Signal Conditioner, Current Input, Current Output, 24V dc Supply, ATEX
  • RS Stock No. 522-388
  • Mfr. Part No. 2905623
Subtotal (1 unit)
TWD15,194.00(exc. GST)
TWD15,194.00/unit
In Stock
Weidmüller ACT20P Series Signal Conditioner
  • RS Stock No. 892-8987
  • Mfr. Part No. 7760054117
Subtotal (1 unit)
TWD17,285.00(exc. GST)
TWD17,285.00/unit
Temporarily out of stock
Motrona IX Series Indicator, 30V Supply, EN IEC 63000
  • RS Stock No. 719-390
  • Mfr. Part No. IX355
Subtotal (1 unit)
TWD17,296.00(exc. GST)
TWD17,296.00/unit
Temporarily out of stock
Motrona FP Series Signal Converter, Universal Input, RS422 Output, 30V Supply, EN IEC 63000
  • RS Stock No. 719-382
  • Mfr. Part No. FP210
Subtotal (1 unit)
TWD14,927.00(exc. GST)
TWD14,927.00/unit
Temporarily out of stock
Phoenix Contact MACX MCR Series Signal Conditioner, Current/Voltage Input, Relay Output, 24V dc Supply, ATEX
  • RS Stock No. 189-2315
  • Mfr. Part No. 2906164
Subtotal (1 unit)
TWD11,289.00(exc. GST)
TWD11,289.00/unit
Stocked by manufacturer
Endress+Hauser Galvanic Barrier, Zone 2
  • RS Stock No. 288-6005
  • Mfr. Part No. RN42-CB1AO
Subtotal (1 unit)
TWD8,740.00(exc. GST)
TWD8,740.00/unit
Temporarily out of stock
Motrona PP Series Signal Converter, Universal Input, RS422 Output, 30V Supply, EN IEC 63000
  • RS Stock No. 719-384
  • Mfr. Part No. ZP210
Subtotal (1 unit)
TWD14,927.00(exc. GST)
TWD14,927.00/unit
In Stock
Weidmüller ACT20P Series Signal Conditioner, RTD Input, Current, Relay Output, 230V ac Supply
  • RS Stock No. 189-7260
  • Mfr. Part No. 2448100000
Subtotal (1 unit)
TWD11,903.00(exc. GST)
TWD11,903.00/unit
In Stock
JM CONCEPT JK 3000 Series Isolating Analogue Converter, Analogue Output, 230 V ac, 90 V ac, 22V dc, 240 V dc Supply
  • RS Stock No. 232-8228
  • Mfr. Part No. JK3000A1
Subtotal (1 unit)
TWD8,134.00(exc. GST)
TWD8,134.00/unit
In Stock
Phoenix Contact MACX MCR Series Signal Conditioner, Voltage Input, Current/Voltage Output, 24V dc Supply, ATEX
  • RS Stock No. 189-2314
  • Mfr. Part No. 2902021
Subtotal (1 unit)
TWD6,431.00(exc. GST)
TWD6,431.00/unit
In Stock
Endress+Hauser RN22 Series Signal Conditioner
  • RS Stock No. 256-6206
  • Mfr. Part No. RN22-8L2B
Subtotal (1 unit)
TWD10,120.00(exc. GST)
TWD10,120.00/unit
Temporarily out of stock
Phoenix Contact MACX MCR Series Temperature Measuring Transducer, Resistance, RTD, Potentiometer Input, Current Output,
  • RS Stock No. 189-2304
  • Mfr. Part No. 1050192
Subtotal (1 unit)
TWD11,129.00(exc. GST)
TWD11,129.00/unit
In Stock
P.M.A CI45 Series Signal Conditioner, Universal Input, Universal Output, 18 V ac, 30 V ac, 18V dc, 31 V dc Supply
  • RS Stock No. 607-8504
  • Mfr. Part No. CI45-113-20000-000
Subtotal (1 unit)
TWD21,492.00(exc. GST)
TWD21,492.00/unit
Temporarily out of stock
Endress+Hauser RN22 Series Signal Conditioner
  • RS Stock No. 256-6205
  • Mfr. Part No. RN22-8L1B
Subtotal (1 unit)
TWD7,538.00(exc. GST)
TWD7,538.00/unit
Stocked by manufacturer
Phoenix Contact Repeater Interface Module, Voltage Output, 24V Supply
  • RS Stock No. 222-1491
  • Mfr. Part No. 2313423
Subtotal (1 unit)
TWD16,497.00(exc. GST)
TWD16,497.00/unit
In Stock
PR Electronics 3100 Series Signal Conditioner, Current Input, Current Output, 16.8V dc, 31.2 V dc Supply, IECEx, ATEX
  • RS Stock No. 270-1722
  • Mfr. Part No. 3108-N
Subtotal (1 unit)
TWD8,336.00(exc. GST)
TWD8,336.00/unit
Temporarily out of stock
Weidmüller ACT20M Series Signal Conditioner, 0 to 20 mA Output, FM Div2, UL, ATEX
  • RS Stock No. 892-8965
  • Mfr. Part No. 1176070000
Subtotal (1 unit)
TWD6,098.00(exc. GST)
TWD6,098.00/unit
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