High and Low Temperature Alarm Switches with Strong Penetration

• Customization: Available
• Transport Package: Carton
• Specification: 200*213
• Model NO.: LTE-RH203
• Trademark: SNTOOM
• Origin: China

Product Description

Technical Specifications Table:

Parameter	Specification
Model Number	LTE-RH203
Dimensions	210×200×180mm (H×W×D)
Panel Size	158×107mm
Mounting Depth	70mm
Power Supply	AC 220V (110V/380V optional)
Temperature Range	0°C to 1200°C (programmable)
Accuracy	±0.5% FS
Alarm Output	95dB buzzer + LED strobe
Material	Flame-retardant ABS
Protection Class	IP65 (front panel)
Relay Capacity	5A @ 250V AC

Control Features:

 Dual-Setpoint Control

• Independent high/low alarm thresholds

• Hysteresis adjustable from 1°C to 50°C

 Multi-Sensor Support

• Compatible with:
  • PT100 RTD
  • K-type thermocouple
  • J-type thermocouple

 Advanced Functions

• 4-20mA analog output

• RS485 Modbus communication

• Fault self-diagnosis

Application Matrix:

Industry	Typical Use Cases
Aquaculture	Water temperature monitoring
Hydropower	Dam flood discharge control
HVAC	Equipment room monitoring
Food Processing	Cold chain supervision
Metallurgy	Furnace temperature alerts

Installation Specifications:

• Panel cutout: 165×110mm

• Conduit entries: 3× PG9

• Ambient operating range: -20°C to +60°C

• Relative humidity: ≤95% non-condensing

Display & Interface:

• LED digital display (4-digit)

• 6 tactile operation buttons

• Dual-color status indicators:
  • Green: Normal operation
  • Red: Alarm condition

Why Choose LTE-RH203?
→ Wide temperature range covers most industrial needs
→ Multiple sensor compatibility for flexible deployment
→ Dual alarm outputs (relay + analog)
→ Industrial-grade construction for harsh environments

Package Includes:
1× Control Unit
1× Temperature Sensor (type selectable)
2× Mounting Clips
1× Quick Start Guide

Certifications:
• CE • RoHS • ISO 9001
• Exia II CT4 (optional)

Optional Accessories:

• Explosion-proof enclosure

• Wireless transmission module

• Multi-zone monitoring system