Wirless Monitoring System

Product catalog summary

Overview
HK308 is a versatile host designed for data transmission, monitoring, management, and control operations. It is easy to install and supports multiple interfaces for analog and digital inputs, RS485 communication, relay control, and analog output. Configuration is straightforward via a wired USB connection within a local area network.

Technical Specifications
Power Supply Parameters
- Supply voltage: DC12-24V
- Current: 0.5A (MAX) @DC12V
- External power supply: Current limit <1A, voltage equal to equipment supply voltage

Signal
- Wireless signal access: 2G, WIFI, 4G
- Analog input: 8 channels 0-20mA, 8 channels 0-5V
- Analog output: 2 channels, 0-20mA or 0-10V
- Acquisition accuracy: 0.2%
- Output accuracy: 0.3%
- Switch value input: 8-channel active input, DI0 supports up to 6MHz, DI1 above 100MHz
- Relay output: 4-channel, AC220V/5A DC30V/5A

Hardware Performance
- Flame retardant plastic shell, customizable color
- USB TYPE-C for settings and upgrades
- Power, alarm, and network indicators
- Push-type buttons
- RS485 communication interfaces
- 1.3 inch OLED display
- 100M RJ45 interface
- Drawer type SIM card holder
- Weight: 600g
- SMA antenna socket
- Normal operation: 200mA
- Standard plug-in terminal interface
- Ship type power switch
- Dimensions: 205*128*32MM
- Operating environment: -20℃ to 60℃, 0% to 95% RH
- Storage environment: -30℃ to 65℃, 30% to 80% RH

Software Performance
- Connects via GPRS, 4G, WIFI, LAN
- Supports RS485 DTU, wireless/wired platform connection
- Screen for parameter settings and operation information
- 1-year data storage capacity (10 seconds/time)
- USB settings and data export (CSV format)
- Supports MQTT & MODBUS RTU protocols
- Network port supports modbus tcp server, tcp client, mqtt, and modbus rtu
- Northbound RS485 uses modbus rtu for data reading and control
- Southbound RS485 supports transparent transmission
- Device search and configuration in LAN
- Real-time clock calibration

Illustration
- Top view
- Front view
- Left: Network port [Northbound RS485]
- Right: Wireless port [Southbound RS485]

Catalog excerpts

1. Overview HK308 is a host with multi functions of data transmission, monitoring management and operation and control, easy to install. Multiple interfaces can be connected to analog input (current, voltage acquisition), with digital input RS485 communication, switch value acquisition, relay control and analog output. The wired USB configuration is simple, configuration is done in the local area network, and operation is easy. 2. Technical Specifications 2.1 Power Supply Parameters Supply voltage: DC12-24V Current: 0.5A (MAX) @DC12V External power supply: current limit <1A, voltage equal to equipment supply voltage 2.2 Signal Wireless signal access: 2G, WIFI, 4G Analog input: 8 channels 0-20mA input, 8 channels 0-5V voltage input Analog output: 2 channels, 0-20mA output, 0-10V output optional Acquisition accuracy: 0.2% Output accuracy: 0.3% Switch value input: 8-channel active input, among which DI0 and DI1 channels support counting, and the speed of DI0 up to 6MHz, DI1 above 100MHz Relay output: 4-channel relay output function, AC220V/5A DC30V/5A, maximum 2.3 Hardware performance ● Environmental-friendly flame retardant plastic shell, color customizable, black by default ● USB TYPE-C interface for setting, debugging and upgrading ● Power, alarm and network indicator ● Push-type buttons ● Two communication interfaces of RS485 south and north ● 1.3 inch OLED screen

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● 100M RJ45 interface ● Drawer type SIM card holder ● Weight of 600g ● SMA antenna socket ● Normal work 200mA ● Standard plug-in terminal interface ● Ship type power switch ● Size of 205*128*32MM ● Working environment of -20℃ ~60℃ 0%~95%RH ● Storage environment of -30℃~65℃ 30%~80%RH 2.4 Software performance ● Connecting the platform via GPRS, 4G, WIFI, LAN network ● Support RS485 DTU, wireless/wired optional for platform connection, and socket can be shared or independent ● Support the screen to set most of the parameters, and to view equipment operation information and equipment operation failure...

Open the catalog to page 2