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Switching Value Synchronous Remote Transmission
Switching Value Synchronous Remote Transmission
Switching Value Synchronous Remote Transmission
Switching Value Synchronous Remote Transmission
Switching Value Synchronous Remote Transmission
Switching Value Synchronous Remote Transmission
K61-DL20 Switching Value Synchronous Remote Transmission

[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.

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No. Port and Other Definitions Function Receiving Description
1 PE Protective earth terminal Lightning protection grounding. If the ground lead is good, it is recommended to connect the product case to the ground; vice versa.
2 + Positive power supply The power input is positive, and the DC input voltage range is 8-28V.
3 - Power ground Power input negative (0V).
4 B/RX Communication interface B/RXD RS485 interface B/(RS232_RXD).
5 A/TX Communication interface A/TXD RS485 interface A/(RS232_TXD).
6 G Communication port RS485 ground (can not be connected)/RS232 signal ground (0V).
7 Second communication interface Antenna port/network port 433Mhz antenna port/network port socket
8 NO1 Switch output channel 1 The relay is normally open contact output, and the contact current is less than or equal to 3A.
9 COM1 Public 1 Common terminal of relay output channel 1.
10 NO2 Switch output channel 2 The relay is normally open contact output, and the contact current is less than or equal to 3A.
11 COM2 Public 2 Common terminal of relay output channel 2.
12 NO3 Switch output channel 3 The relay is normally open contact output, and the contact current is less than or equal to 3A.
13 COM3 Public 3 Common terminal of relay output channel 3.
14 NO4 Switch output channel 4 The relay is normally open contact output, and the contact current is less than or equal to 3A.
15 COM4 Public 4 Common terminal of relay output channel 4.
16 - None Leave it in the air, do not connect.
17 SFR Reset Press and hold for 3 seconds to restore the factory settings (Set Factory Reset) (indicated by the status of the RUN light).
18 SIM SIM card slot Insert a data IoT card and a phone card with a data plan. (This product has no SIM card slot)
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No. Port and Other Definitions Function Sending Description
1 PE Protective earth terminal Lightning protection grounding. If the ground lead is good, it is recommended to connect the product case to the ground; vice versa.
2 + Positive power supply The power input is positive, and the DC voltage input range is DC8-28V.
3 - Power ground Power input negative (0V).
4 B/RX Communication interface B/RXD RS485 interface B/(RS232_RXD).
5 A/TX Communication interface A/TXD RS485 interface A/(RS232_TXD).
6 G Communication port RS485 ground (can not be connected)/RS232 signal ground (0V).
7 Second communication interface Antenna port/network port 433Mhz antenna port/network port socket
8 DI1 Switch value acquisition channel 1 Switch signal acquisition channel 1. With GND: dry contact input is closed and valid; wet contact is less than 0.7V valid.
9 GND Input negative Input negative (0V).
10 DI2 Switch value acquisition channel 2 Switch signal acquisition channel 2. With GND: dry contact input is closed and valid; wet contact is less than 0.7V valid.
11 GND Input negative Input negative (0V).
12 DI3 Switch value acquisition channel 3 Switch signal acquisition channel 3. With GND: dry contact input is closed and valid; wet contact is less than 0.7V valid.
13 GND Input negative Input negative (0V).
14 DI4 Switch value acquisition channel 4 Switch signal acquisition channel 4. With GND: dry contact input is closed and valid; wet contact is less than 0.7V valid.
15 GND Input negative Input negative (0V).
16 - None Leave it in the air, do not connect.
17 SFR Reset Press and hold for 3 seconds to restore the factory settings (Set Factory Reset) (indicated by the status of the RUN light).
18 SIM SIM card slot Insert a data IoT card or a phone card with a sufficient data plan.(This product has no SIM card slot)