Temp/Humidity Indicator · RHT Series

Temperature Humidity Indicator

Temperature and Humidity 4–20 mA Output RS485 Modbus IP54 ½" to 6" Sizes Integral/Remote Sensor

Simultaneous Dual Measurement Displays temperature and relative humidity on a single LED panel — no separate instruments required.

Flexible Output Options Choose from none, 4–20 mA, relay, or RS485 Modbus to match existing SCADA, BMS, or PLC systems.

Full Size Range Available from 0.5-inch DIN panel to 6-inch jumbo wall display for any room or floor size.

IP54 Industrial Rated Powder-coated MS enclosure handles dusty, humid plant environments without additional housings.

Product Models

Temperature Humidity Indicator Models

RHT005 Temperature Humidity Indicator

Display Size 0.5" (12mm)

Sensor Integral

Enclosure 96×96mm ABS Plastic

Protection IP54

Outputs None / 4–20mA / Relay

Dimensions 96mm x 96mm x 130mm

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RHT02 Temperature Humidity Indicator

Display Size 2" (50mm)

Sensor Integral / Remote

Enclosure MS Powder Coated

Protection IP54

Outputs None / 4–20mA / Relay / RS485

Dimensions 300m x 270mm x 65mm

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RHT04 Temperature Humidity Indicator

Display Size 4" (100mm)

Sensor Integral / Remote

Enclosure MS Powder Coated

Protection IP54

Outputs None / 4–20mA / Relay / RS485

Dimensions 620mm x 200m x 80mm

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RHT04V Temperature Humidity Indicator

Display Size 4" (100mm)

Digits 3 per parameter

Sensor Integral / Remote

Enclosure MS Powder Coated

Protection IP54

Outputs None / 4–20mA / Relay / RS485

Dimensions 370mm x 350mm x 60mm

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RHT06 Temperature Humidity Indicator

Display Size 6" (150mm)

Sensor Remote

Enclosure MS Powder Coated

Protection IP54

Outputs None / 4–20mA / Relay / RS485

Dimensions 750mm x 550mm x 80mm

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Need a different size, input range, or enclosure? Tell us your requirement — we custom-build to spec.

About This Product

Temperature and Humidity Monitoring Built for Industrial Environments

The RHT Series Temperature Humidity Indicator measures and displays both ambient temperature and relative humidity on a bright LED display, purpose-built for industrial sites. Outputs include 4–20mA, relay, and MODBUS RS485 — making the RHT Series straightforward to integrate into existing SCADA, BMS, or PLC systems. The IP54-rated enclosure handles dusty and humid plant environments without special enclosures or housings.

Simultaneous temperature and relative humidity display
Choice of 0.5" (12mm) or 1" (25mm) LED digit size
Integral sensor or remote sensor up to 2m cable length
Output options: None / 4–20mA / Relay / 4–20mA + Relay / MODBUS RS485
Single-side display; wall-mount enclosure
Powered by 230V AC or 24V DC supply
IP54-rated enclosure for industrial and utility environments

±0.5 °C

TEMP ACCURACY

±3% RH

HUMIDITY ACCURACY

½", 1", 2", 4", 6"

DISPLAY SIZES

4–20 mA / Relay / RS485

OUTPUT OPTIONS

Technical Specifications

Full Specification Table

Parameter	Specification
Measured Parameters	Temperature and Relative Humidity
Temp Range	0–50 °C
Humidity Range	10–95% RH
Temp Accuracy	±0.5 °C
Humidity Accuracy	±3% RH
Display Sizes	½", 1", 2", 4", 6" LED digit height
Sensor	Integral or Remote (up to 2 m cable)
Output Options	None / 4–20 mA / Relay / 4–20 mA + Relay / MODBUS RS485
Power Supply	230 V AC, 50 Hz / 24 V DC
Enclosure	MS Powder Coated / ABS Plastic (0.5" model)
IP Rating	IP54
Mounting	Panel mount (DIN) / Wall mount / Roof hanging

Model	Variant	Dimensions (W × H × D mm)	Typical Viewing Distance
RHT005	Temperature Humidity Indicator, ½ Inch	96 × 96 × 130	4 m
RHT02	Temperature Humidity Indicator, 2 Inch	300 × 270 × 65	20 m
RHT04	Temperature Humidity Indicator, 4 Inch	620 × 200 × 125	50 m
RHT04-4D	Temperature Humidity Indicator, 4 Inch, 4 Digit	445 × 440 × 60	50 m
RHT06	Temperature Humidity Indicator, 6 Inch	750 × 550 × 80	75 m

How to Order

Ordering Information

Parameter	Options
Code Format	`[BASE_CODE]-[SENSOR]-[OUTPUT]-[IPRATING]-[PS]`
Sensor	TP — Tip Sensor (included) (default)
Output	OP0 — No Output (default) OP1 — 4–20 mA Retransmission OP2 — Relay Hi/Lo OP3 — 4–20 mA + Relay Hi/Lo OP4 — RS485 Modbus RTU
IP Rating	IP54 — IP54 Rain + Dust Resistant (default) IP65 — IP65 Fully Dust Tight, Air Tight
Power Supply	PS1 — 230V AC, 50Hz (default) PS2 — 24V DC