Ebyte K61-DL20 support modbus 4 channels of acquisition and output RS485 data transmission Switch transmission module

K61-DL20 Switching Value Synchronous Remote Transmission   [DI input channels]：4 [DO output channels]：4 [Interface type]：Switch digital type [Size]：110*84.32*25.3mm [Product weight]：164±5g [Introduction]：This product is a cross-communication function product. Function: The sender collects 4-channel switch signal and transmits the data to the receiver through wireless (LoRa spread spectrum) or network port, and the receiver restores the 4-channel switch signal. Item Description Number of DI/DO channels 4 Interface Type Switch (digital) type Connection method 5.08mm industrial grade plug-in terminal Refresh rate When a signal change is detected, trigger immediately (debounce time 150ms) DI signal input 1. The dry and wet nodes are compatible, and the low-level input of the switching value is valid; 2. DI acquisition channel and GND: the effective voltage input range of low-level action is less than 0.7V; the withstand voltage range is less than 30V; reverse connection may cause product damage. DO signal output 1. The switch output type is: relay normally open contact output; 2. Relay contact load current range: ≤3A. Product Size 110*84.32*25.3mm（length*width*height） Product weight 164±5g Package weight 710±10g Operating temperature -40℃～85℃ Storage temperature -60℃～125℃ Working humidity 5%～95% RH Storage humidity 1%～95% Waterproof level Not waterproof, with certain moisture resistance Dust rating Completely blocks dust Operating Voltage DC voltage: DC 8V～28V Power connector type 5.08mm industrial grade plug-in terminal Transmitter power consumption Pmax (maximum power consumption) = 1W, Pav (average power consumption) ≤ 0.5W Receiver power consumption Pmax (maximum power consumption) = 1W, Pav (average power consumption) ≤ 0.5W First method of communication type RS485 First method of communication whether with isolation No First method of communication connection method 5.08mm industrial grade plug-in terminal Type LoRa Wireless Spread Spectrum (SX1262) Transmit power 160mW (22dBm) Working frequency 410.125～493.125Mhz (default 410.125Mhz) Measured distance 4000 meters (clear and open environment, maximum power, airspeed 2.4K, antenna gain 5dBi, feeder length 1m);It is recommended that the actual engineering application distance should be less than or equal to 1000 meters Air rate 2.4～62.5kbps (default 4.8kbps) Receive sensitivity -138dbm Actual frequency calculation formula Actual frequency=410.125Mhz+channel*1Mhz Number of channels 83 Matching Antenna Interface/Impedance/Frequency SMA female thread inner needle/equivalent impedance 50Ω/433Mhz