SMA-DTU-A1 data collection and transmission device that you have nine reasons to choose it! 1. Meet the standard Modbus-TCP protocol! 2. The machine uses industrial-grade design standards, IP65 degree of protection, high performance, high reliability, easy operation and setup, user-friendly! 3. The device supports 10 groups of user-defined data reporting features! 4. With four relay control output, corresponding to four alarm parameters! 5. The alarm limit from the actual value of the user calibrated, after which the user calibration, the actual values ??can be read from the "Input Register"! 6. The alarm logic can be taken on a given upper and lower limits, and set the dead zone to prevent the warning shake! 7. The relay control output determined by the setting alarms when an alarm occurs, the relay is set according to "relay time" action! 8. Support HMI! 9. provide design engineering and service software Demo! I. Introduction SMA-DTU-A1 equipment in accordance with industry-standard design, along with 4-20mA data sampling, alarm control output, real-time online data remote transmission capabilities. Support GPRS / GSM networks. With RS232, RS485 ports support standard Modbus-RTU protocol enables remote parameter configuration and real-time measurement data call through the local communications port or GPRS / GSM networks. Supports standard Modbus-TCP protocol. Second, the technical parameters 1, 4 analog inputs, the input signal 4-20mA. 2, 4 relay outputs, contact capacity 5A. 3, take the initiative to report configuration. 4, sampling loss record. 5, set the sampling period. 6, serial, 1 RS232,1 way RS485, serial rate 1200bps-115200bps. 7,1 road GPRS / CDMA. 8, the working temperature: 0 ℃ ~ + 65 ℃, Humidity: 0 ~ 99% RH. Third, the specification of basic parameters of the whole machine power supply 24VDC 2.5W Dimension Length: 158mm Width: 147.2mm Depth: 37.8mm (see dimension drawing) controller parameter controller housing stainless steel housing Controller Power 24VDC internal real time clock Clock Operating temperature 0 ℃ ~ 65 ℃ Electrical performance frequency impulse voltage withstand 2KV static discharge 6KV 8KV (controller indirect discharge, metal shell direct discharge) surge 4KV differential mode 2KV common mode voltage range of 9-36V design life of 10 years Clock battery life of 12 years hardware interface DC analog 4 channel input signal 4-20mA RS485 1 channel, serial data rate 1200bps-115200bps RS232 1 channel, serial data rate 1200bps-115200bps GPRS / CDMA 1 channel 4 channel relay output, contact capacity 5A