You should consider ROI-RFX Wireless 20mA Monitoring System. LR WPAN 4-20mA input 2.4GHz IEEE 802.15.4 modules. Because they let you use 4-20mA sensor signals with wireless connection for sensor measurement.
Wireless 20mA Monitoring System
The ROI-RFX is a versatile 2.4GHz wireless input module. It is a Wireless 4-20mA Monitoring System LR WPAN (Low-Rate Wireless Personal Area Network) device utilizing IEEE standard 802.15.4 protocol.
The ROI-RFX is a versatile because a signal range is available for many sensor measurement applications, as well as serial input if needed. The supply voltage range is a wide 7 to 36Vdc. As well it is compatible with a number of software options.
When you have nearby 4-20mA signal measurements you need to make, but inconvenient or too difficult for a direct wire connection, and need to add sensor measurement, use ROI-RFX series 4-20mA input modules. Because ROI-RFX series 4-20mA input modules allow the simple measurement of industry standard 4-20mA sensor signals. So you can easily connect your existing sensors to a modern environmental system. They are a simpler way to add sensor signal measurement than other types. 4-20mA are simpler to use than other sensor signal types. Because 4-20mA signals are easy to wire, and just use standard copper cable, they are useful in HVAC systems, refrigeration systems, chillers, environmental monitoring, computer room monitoring, dryer, and a variety of other applications.
Simple to use wireless temperature measurement
When you need simple to use wireless sensor measurement, use the ROI-RFX series. In other words ROI-RFX series wireless sensor input modules are a simple way to add sensor measurement to an environmental monitoring system.
Useful because it provides wireless temperature sensing, for remote temperature monitoring over distances up to 1 mile using industry standard 4-20mA sensor signals. Because the ROI-RFX-RT is a simple to use Windows compatible 2.4 GHz RF wireless remote sensor transmitter system. Firstly, using the ROI-RFX-MA allows you to remotely monitor & record sensors over distances of up to 1 mile/1.6 km. Secondly it uses industry standard 4-20mA sensor signals. Therefore, remote sensor measurement or sensor profile recording is simple; data can be updated real time directly into Excel, on custom screens, recorded to file, and more! Total transmission distance can be extended with additional units, as well as allowing an increased number of sensors.
So you can, monitor 4 sensors per unit. Multiple units per system, expandable as needed.
2.4 GHz THERMISTOR TEMPERATURE SENSOR TRANSMITTER
WIRELESS ANALOG CONVERTER
PLUGGABLE EURO ELECTRICAL CONNECTORS
SNAP ON MOUNTING BASE FOR DIN RAIL OR SURFACE MOUNTING
CAN BE POWERED BY WIDE RANGE OF DC SOURCES, 7-36V
USEFUL FOR REMOTE SENSOR TREND MONITORING
SIMPLE TO USE SOFTWARE AVAILABLE
Input range: 4-20mA signal type
Input: 4 sensors
Sensor Connections: 2 per input, 2 inputs per connector
Resolution: 10 BIT
PC Communications: Serial, with USB adapter option
Mounting: 35mm DIN Rail or Surface mountable snap on base
Dimensions: 4.510 X 1.258 X 3.948”LWH, mated connector adds additional 3/8” (height above rail)
Configuration: 2 unit minimum, 8 unit maximum
Type: LR WPAN 20mA input
Range: Indoor/Urban up to 300 ft/90 m, Outdoor line-of-sight up to 1 mile/1.6 km
Transmit Power Output: 63 mW (+18 dBm)
Receiver Sensitivity: -100 dBm
Wireless Transmission: 2.4 GHz frequency band, optimized for use in US and Canada
Compatible Operating Systems: Windows 10
Minimum Configuration: (1) RFX-USB adapter, (2) ROI-RFX units, (1) PC with compatible software, (2) DC supplies
Software: Windows compatible software requires separate purchase.
[PC, Software, Serial cable, DC supplies are not included]