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 Specifications
Supply Voltage Range 9-18/18-36 Vac or 85 – 264 Via
Nominal Supply Voltage 12 / 24 Vac or230 Vne
CPU ARM Cortex-M4 32 Bit 180 Mhz
Flash 256 kB
RAM 128 kB
Watchdog Timer System Reset / 5 sec
Power Consumption 0.46W 230Vne
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
Infrared Receiver Input Frequency 38kHz
Relay Output Contact Current Rating 10A
Relay Output Maximum Switching Voltage 250VAC
Relay Contact Form SPOT (1 Form C)
Wi-Fi Specifications
WI-Fl 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
R5-485 BaudRate 1200bps – 115200bps
USA Data Transfer Speed 480 Mbit/s