Wireless Transmitter for 0-20mA and 4-20mA current inputs | T24-IA

Miniature, High Speed, Wireless Current Sensor Transmitter
T24 Wireless OEM PCB Modules
Typical Lead Time
2 weeks
Prices From
£360
(excl. VAT)
Accelerated delivery available
Quantity, OEM & educational discounts

At a Glance

  • 2.4GHz Operating Frequency (Licence Free)
  • Range: up to 600m (internal antenna) / up to 800m (external antenna
  • 0-20mA Current Input
  • Resolution up to 30,000 divisions
  • Very Low Power Consumption
  • Wireless Monitoring for your 4-20mA and 0-20mA Sensors  
  • Miniature PCB Ideal for OEM Integration
  • High Speed Updates at 200 per Second
  • Simple Wireless Setup
  • Fantastic Wireless Transmission Range – Up to 800 metres! 

Description

The T24-IA wireless current transmitter module enables high accuracy wireless measurement of signals from 0-20mA and 4-20mA current output sensors such as pressure transmitters, LVDT displacement sensors and level/depth sensors.

Transmission ranges of up to 600 metres are possible using the internal antenna, while the use of an external antenna increases transmission range up to 800 metres.

The T24-IA wireless current transmitter module requires a power supply of just 3Vdc to operate which is typically provided by 2x ‘AA’ batteries and provides a highly stable, high resolution signal that can be received by any of the T24 range of 2.4GHz telemetry instrumentation.

Output rates of up to 200 readings/second are possible at a noise-free resolution of 1 in 5000, increasing to 1 in 30,000 at a reduced output rate of 1 reading/second or less.

The compact T24-IA transmitter module can be integrated into load cells and other sensors if sufficient space is available.  Alternatively, it can be mounted into either the T24-ACM(2x ‘D’ size batteries) or T24-ACMi (2x ‘AA’ size batteries) battery-powered modules to complete your wireless sensor.

Please contact our expert sales team using the form in the sidebar, call us on +44 (0) 1189 817339, or send an email to [email protected] and we will be happy to assist you with your enquiry.

Technical Specifications

RadioMinTypicalMaxUnits
LicenceLicence Exempt
Modulation MethodMS (QPSK)
Radio TypeTransceiver (2 way)
Data Rate250K bits / second
Radio Frequency2.42.4835GHz
Power10mw
Range*800Metres
Channels (DSSS)15
*Tests conducted in an open field site with the transmitter at the top of a 3m pole. The receiver was mounted 1.5m off the ground.
Input Range Sensitivity (FR)0-21mA
Calibrated Range4-20mA
Gain Temperature Stability-50ppm /˚C
Offset Temperature Stability0.5ppm /˚C
Non Linearity before Linearization525ppm of FR
Internal Resolution16,000,000 / 24Resolution/Bits
Input Impedance-47-Ohms
Input Calibration Accuracy--0.1%FR
Noise Free where Sample Time < 10mS5,000 / 12.5Resolution/Bits
Noise Free where Sample Time < 100mS6,000 / 12.75Resolution/Bits
Noise Free where Sample Time < 1000mS10,000 / 13.25Resolution/Bits
Noise Free where Sample Time > 1000mS30,000 / 14.75Resolution/Bits
Transmission RatesOnce per dayOnce every 5 ms
Excitation Available5 Vdc @ 50 mA
Power Supply
ACMi and OEM Module2.13.6Vdc
ACM518Vdc
Normal Mode on Constantly4045mA
Standby Mode / Low Power Mode520uA
Battery Life - Transmitting results at 3 per second, no excitation requiredUsageBattery Life
Pair AA cellsConstantly on1 month
Pair AA cells12 sessions per day of 5 minutes2 years
Pair DD cellsConstantly on4.5 months
Pair DD cells12 sessions per day of 5 minutes>9 years
Environmental
Operating Temperature Range-2055°C
Storage Temperature Range (no batteries)-4085°C
Humidity095% non-condensing
IP Rating (ACM and ACMi)IP67/Nema4
EnclosureACMACMiACMm
Wireless Range / m800m (2,600 ft)800m (2,600 ft)500m (1,600 ft)
Power Supply3-18 Vdc or 2xD cell3 Vdc (2xAA)3 Vdc (2xAAA with BB1)
Battery Life at 1 transmission per second*1 year5 months2 months
AntennaANTAANTAPCB Printed
Radio Frequency2.4 GHz
Operating Temperature /˚C-20 to +55-20 to +55-20 to +55
Environmental ProtectionIP67IP67IP50
Module Size / mm164 x 84 x 5780 x 62 x 3476 x 35 x 20
Software & ConfigurationT24 Toolkit & T24LOG100

Product Dimensions

T24-IA Wireless Current Transmitter Module Outline Drawing

V2.0

T24 Transmitter Module Battery Life Calculator

Select the required module and enter the chosen parameters including the battery type. Click 'Calculate' and the noise free resolution and the expected battery life will be displayed.

T24 Device
Select your module.
Tx Interval (ms)
Enter the transmission interval in milliseconds. The default is 333mS which is three transmissions per second.
Sample Time (ms)
Enter the sample time in milliseconds. Increasing the sample time will improve the noise free resolution at the expense of battery life.
Load Cell Impedance (Ohms)
Enter the loadcell impedance in ohms or the current drawn by any external sensor in the case of a T24-VA or T24-IA.
Usage Per Day (hours)
What is the estimated number of hours per day that the device is likely to be awake. Remember that when not in use the modules enter a very low current deep sleep mode.
Battery
Selecting a common battery type here will populate the usable battery capacity below.
Usable Battery Capacity (Ah)
Enter the usable battery capacity. This may not necessarily be the published capacity.
Startup Time (ms)
This optional feature allows time for an external sensor to start up. This is not required for load cells.
Low Power Mode
Select this to enable the module to save power between transmissions. If the battery life looks too short check here to see if Low Power Mode is selected. This is not available for T24-SAf modules.

Ordering Codes & Options

CodeDescription
T24-IAeWireless Radio Telemetry Current (4-20mA) Acquisition Module + external antenna (must be ordered separately)
T24-IAiWireless Radio Telemetry Current (4-20mA) Acquisition Module + internal antenna
Last updated: 6th May 2026

Due to our policy on ongoing development, dimensions and specifications may change without notice.

Downloads

Other Downloads

  • T24 Wireless Telemetry Manual
  • Software downloads to accompany the T24 modules are available below - a T24 base station is required to use the software and configure T24 modules.

    Download Description
    T24 Toolkit This toolkit allows configuration, calibration and testing of the T24 range of 2.4GHz telemetry products. The T24 Toolkit is a software tool that allows communication with the T24 range of 2.4GHz telemetry products. A suitable telemetry to PC interface will be required such as a base station (T24-BSue).
    T24Log100 T24LOG100 has been designed to allow the logging and visualisation of up to 100 channels of data from the T24 Wireless Telemetry range of sensor transmitters.
    T24 Quick View This product allows you to view and log data from the T24 range of 2.4GHz telemetry acquisition modules. Only works with T24-BSu USB base station.

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