EST Temperature Detector
EST Series
1-16-channel temperature monitoring, supporting NTC/PT100/thermocouple sensors, real-time sensing of distribution-node temperature.
Product Overview
The EST multi-channel temperature smart controller employs proprietary patented software algorithm technology and embedded programs, matched with industrial-grade measurement and control chips, to precisely realize data processing, predictive analysis and more. By monitoring the temperature of heat points such as switch contacts in real time, it can detect early signs of abnormal heating faults and thus prevent failures. Meanwhile, temperature history records provide a scientific data basis for condition-based maintenance of switchgear. Temperature sensing depends not only on the temperature sensor, but is also deeply linked to the controller's temperature acquisition, temperature analysis and trend judgment, making the data "trustworthy" and "smart-controllable".
Core monitoring capabilities
8/100-channel temperature monitoring, supporting wired NTC and wireless 433 dual-mode temperature measurement. Patented algorithm + high-speed chip for accurate, fast and stable data with early prediction. High-precision temperature sensor that operates stably under strong electromagnetic interference with ±1℃ accuracy. OLED display + physical buttons, RS485 communication with Modbus protocol, 36mm pocket width. Product Features
Data Generated
Product Features
Accurate data
The high-speed chip captures key parameters accurately, quickly and stably, enabling early prediction while removing useless parameters such as current and humidity monitoring.
Upgraded key parameters
The high-precision temperature sensor operates stably even under strong electromagnetic interference.
All-weather sensor
Applications include temperature monitoring and management of single or multiple contacts inside distribution cabinets and boxes, as well as multi-point temperature measurement of environments or specific spaces.
Wide range of applications
Suitable for temperature monitoring in multiple scenarios, such as distribution cabinets, distribution boxes, switch contacts, and environmental spaces.
Convenient, flexible and compact
Supports linkage control; standard features include an OLED display and physical buttons for convenient on-site querying and settings; RS485 communication with Modbus protocol; 36mm pocket width that fits even the smallest locations. Selection Guide
System Topology
Selection Guide
Model naming convention
EST - 1 2 2 1 0 - R EST Product: Temperature monitoring module 1 Power supply 1=DC5V / 2=AC220V 2 Display 1=digital tube / 2=OLED screen 2 Temperature channels 2=8 channels / 9=100 channels 1 Measurement method 1=wired NTC / 2=wireless 433 0 Reserved 0=reserved R Communication R=RS485 (Modbus) Model Power supply Display Temperature channels Relay output RS485/MODBUS EST-12210-R 5V OLED 8 1 Supported EST-22210-R 220V OLED 8 1 Supported EST-12920-R 5V OLED 100 --- Supported EST-22920-R 220V OLED 100 --- Supported Technical Parameters
| Model | Power supply / Display / Temperature channels / Relay output / RS485/MODBUS |
| EST-12210-R | 5V / OLED / 8 / 1 / Supported |
| EST-22210-R | 220V / OLED / 8 / 1 / Supported |
| EST-12920-R | 5V / OLED / 100 / --- / Supported |
| EST-22920-R | 220V / OLED / 100 / --- / Supported |
Technical Parameters
Basic parameters
Operating voltage DC 4.75~5.25V (5V) or AC 180~250V (220V) Power consumption ≤2W Operating temperature -20℃~60℃ Operating humidity <95% Weight 150g Dimensions 36*110*69mm (L×W×H) Housing material Thermoplastic material UL94V0 Protection rating IP20 Mounting method Standard 35mm DIN rail mounting Display OLED Communication RS485 Communication protocol Modbus protocol
| Operating voltage | DC 4.75~5.25V (5V) or AC 180~250V (220V) |
| Power consumption | ≤2W |
| Operating temperature | -20℃~60℃ |
| Operating humidity | <95% |
| Weight | 150g |
| Dimensions | 36*110*69mm (L×W×H) |
| Housing material | Thermoplastic material UL94V0 |
| Protection rating | IP20 |
| Mounting method | Standard 35mm DIN rail mounting |
| Display | OLED |
| Communication | RS485 |
| Communication protocol | Modbus protocol |
Monitoring functions
Wired temperature measurement NTC measurement: -30~125℃, ±1℃ Wireless temperature measurement Active measurement: -20~100℃, ±1℃; communication: LoRa communication; maximum number of channels: 100 channels; sampling period: 1min (configurable); effective communication distance: ≤300m Discrete output Relay output; contact capacity: AC250V/3A, DC30V/3A; normally open relay contact Installation Instructions
| Wired temperature measurement | NTC measurement: -30~125℃, ±1℃ |
| Wireless temperature measurement | Active measurement: -20~100℃, ±1℃; communication: LoRa communication; maximum number of channels: 100 channels; sampling period: 1min (configurable); effective communication distance: ≤300m |
| Discrete output | Relay output; contact capacity: AC250V/3A, DC30V/3A; normally open relay contact |
Installation Instructions
a
Installation dimension drawing
36mm width 110mm height 69mm depth 35mm standard DIN rail b
Sensor description
NTC sensor specifications Parameter Specification Resistance (R25℃) 10kΩ Cable length (default) 1m c
| Parameter | Specification |
| Resistance (R25℃) | 10kΩ |
| Cable length (default) | 1m |
Interface description
Wiring definition Terminal Definition L1 Live wire N Neutral wire 5V 5V DC power input GND 0V A RS485 A terminal B RS485 B terminal DO1 Output terminal (relay output, directionless) DO1' Output terminal' (relay output, directionless) T1 NTC temperature 1 input (connect the other end to GND, input is directionless) T2 NTC temperature 2 input (connect the other end to GND, input is directionless) T3 NTC temperature 3 input (connect the other end to GND, input is directionless) T4 NTC temperature 4 input (connect the other end to GND, input is directionless) T5 NTC temperature 5 input (connect the other end to GND, input is directionless) T6 NTC temperature 6 input (connect the other end to GND, input is directionless) T7 NTC temperature 7 input (connect the other end to GND, input is directionless) T8 NTC temperature 8 input (connect the other end to GND, input is directionless) Note: The 220V AC input and the 5V DC power input can only use one at a time.
| Terminal | Definition |
| L1 | Live |
| N | Neutral |
| 5V | 5V DC power input |
| GND | 0V |
| A | RS485 A terminal |
| B | RS485 B terminal |
| DO1 | Output terminal (relay output, directionless) |
| DO1' | Output terminal' (relay output, directionless) |
| T1 | NTC temperature 1 input (connect the other end to GND, input is directionless) |
| T2 | NTC temperature 2 input (connect the other end to GND, input is directionless) |
| T3 | NTC temperature 3 input (connect the other end to GND, input is directionless) |
| T4 | NTC temperature 4 input (connect the other end to GND, input is directionless) |
| T5 | NTC temperature 5 input (connect the other end to GND, input is directionless) |
| T6 | NTC temperature 6 input (connect the other end to GND, input is directionless) |
| T7 | NTC temperature 7 input (connect the other end to GND, input is directionless) |
| T8 | NTC temperature 8 input (connect the other end to GND, input is directionless) |
Key Points
Definition: The EST multi-channel residual current monitoring and control unit is a FEXLINK multi-channel residual current monitoring device, suitable for leakage monitoring of multiple circuits in power distribution systems. Core capabilities: parallel acquisition across multiple residual current channels, threshold-exceeding alarms, RS485 upload, and integration with electrical fire prevention systems. Applicable scenarios: multi-circuit distribution boxes, commercial complexes, hospitals and other scenarios requiring multi-point leakage monitoring. Related products: ESA electrical safety monitoring terminal, ESF electrical fire monitoring and control unit, SFA multi-factor monitoring and control unit.
FAQ
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