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 |