ESU 101

Environmental Sensor Unit

Device Description

ESU 101 is s cost-effective environmental sensor which is also equipped with Infra Red (IR) controller for split-type Air Conditioners. Thanks to its flexible design, ESU 101 has a learning mode which enables the device to be used with almost all split-type ACs. It has an RS-485 interface supporting Modbus/RTU protocol for SCADA applications.

Device Specification

Supply Voltage Range

9-18/18-36 VDC or 85 ~ 264 VAC

Nominal Supply Voltage

12 / 24 VDC or 230 VAC

CPU

ARM Cortex-M4 32 Bit 180 Mhz

Flash

256 kB

Ram

128 kB

Watchdog Timer

System Reset / 5 sec

Power Consumption

0.46W 230VAC

Internal Temperature Sensor

Temperature Range: -20 to 120 °C

Internal Humidity Sensor

Humidity Range: 0 to 100% RH

Infrared Transmitter Output Power

160mW

Infrared Transmitter Output Wavelength

940nm

Infrared Transmitter Carrier Frequency

38kHz

Relay Output Contact Current Rating

10A

Relay Output Maximum Switching Voltage

250VAC

Relay Contact Form

SPDT (1 Form C)

Wi-Fi Specifications

Wi-Fi Protocols

802.11 b/g/n

Frequency Range

2.4 GHz ~ 2.5 GHz (2400M ~ 2483.5M)

RF Certification

SRRC, FCC, CE (RED), IC, NCC, KCC, TELEC (MIC)

Wi-Fi Certification

Wi-Fi Alliance

Wi-Fi Mode

Station / SoftAP / SoftAP + Station

Security

WPA / WPA2

Network Protocols

IPv4, TCP / UDP / HTTP / FTP

Communication Specifications

Communication Protocols

Modbus-RTU (Slave)

Serial Interfaces

1 x RS-485, Micro USB C Type 2.0

RS-485 BaudRate

1200bps – 115200bps

USB Data Transfer Speed

480 Mbit/s

Environment Conditions

Standards

IEC 61326-1, EN 301489-1, IEC 61010-1, EN 60950-1

Operating Temperature

-25°C / +70°C

Storage Temperature

-40°C / +70°C

Operating Humidty

25% – 95% RH

Protection Class

IP20

Mechanical Specifications

Device Dimensions (W x H x D)

115mm x 83mm x 32 mm

Weight

100gr