Wireless Gateways

H2100-R Series RTU

The H2100-R series is an ultra-low-power, compact, and lightweight intelligent RTU
(Remote Terminal Unit). It collects data from external sensors via RS485, RS232, 4-
20mA, LoRa, and digital inputs, and supports multiple Modbus sensors over RS485.
Collected data can be uploaded to a network server via 4G, NB-IoT, or Cat-1.
Parameters can be configured on-site via a smartphone Bluetooth app.


This product features a wide input voltage range and ultra-low standby current,
making it especially suitable for applications with strict power consumption
requirements, such as solar panel power supply and disposable battery power
supply.

Key Features

  1. 4G full-network, Cat-1 full-network, NB-IoT, and LoRa options available;
  2. SL651, SZY206, and MQTT protocol options available;
  3. TCP long connection and short connection modes are configurable;
  4. Supports automatic network time synchronization and server-based time calibration;
  5. Supports multi-channel reporting (one sender, multiple receivers);
  6. Supports BeiDou short message communication;
  7. Supports remote maintenance, firmware upgrades, and data pass-through;
  8. Supports short-range Bluetooth for parameter configuration and data pass-through;
  9. Supports exporting historical data via Bluetooth and RS232;
    10.7-32V DC wide voltage power supply.

Application Areas

Widely applicable in water conservancy informatization, smart cities, water utilities, environmental protection, chemical industries, and other IoT-related fields involving data acquisition, storage, communication, and remote control — including hydrology, water resources, water environment, water pollution, flash flood disaster prevention, reservoir safety, and dam safety remote monitoring.

H2100-R-C Series-Manual-Holykell-V26

HK301 Data Transfer Unit

HK301 is a Data Transfer Unit, or a wireless terminal device specially used to convert serial port data into IP data or convert IP data into serial port data for transmission through a wireless communication network

Advantages

  1. Stable,reliable, simple and flexible networking, data transmission delay generally less than 1s
  2. Three communication interfaces TTL, RS232, RS485 available
  3. Support point-to-point, center-to-multipoint peer data transmission
  4. Support automatic re-connection and restart when disconnected

Application:

●Liquid and solids monitoring devices

●Meteorology

●Environmental monitoring systems

●Water conservancy

●Geology

●Electrical power transmission networks

●Natural gas networks and associated equipment

Qty of channels supported5
Power supply+8V～+28Vdc
Data rate300～115200bps 
CommunicationTTL/RS232/RS485
Working environment-20℃ ~60℃ 

HK 302 & HK308 Remote Terminal Units

HK302 and HK308 are Remote Terminal Units(RTUs) primarily designed and optimized for data acquisition from the process and transmission to the remote control center and receipt of command from remote control center and transfer to process.

Advantages

  1. 3-8 channels supported
  2. Able to work in extreme environments
  3. GPRS/4G/WIFI/LAN/Lora supported
  4. Holykell product compatible

Application:

●Liquid and solids monitoring devices

●Networks of pump stations

●Environmental monitoring systems

●Mine sites

●Hydro-graphic

●Electrical power transmission networks

●Natural gas networks and associated equipment

HK302HK308
Qty of channels supported38
Input0-5V,4-20mA8 channels 0-20mA input, 8 channels 0-5V voltage input
Output24V/5V12-24Vdc
Accuracy0.1%0.2%(acquisition)0.3%(output)
Cloud platform communicationTCP, MQTT and MODBUS RTU protocolsMQTT and MODBUS RTU protocols
Working environment-35℃ ~70℃-20℃ ~60℃

HW500 LoRa Wireless Gateway

The HW500 LoRa gateway is a cutting-edge IoT communication device supporting 3G/4G mobile broadband standards like FDD-LTE, TDD-LTE, and WCDMA. Featuring a high-performance 64-bit RISC-V processor and embedded Linux OS, it ensures secure, high-speed data transmission. Its industrial-grade design includes an aluminum alloy casing, wide power input range, and advanced self-check mechanisms for stability. With support for Ethernet, 4G/WiFi switching, Modbus protocol, and GPS functionality, it’s ideal for various industrial applications.

Advantages

  1. Wide network compatibility, including FDD-LTE, TDD-LTE, WCDMA and other 3G/4G mobile broadband network protocols
  2. Industrial-grade design equipped with a high-performance 64-bit RISC-V processor and industrial-grade wireless module
  3. Features hardware and software watchdogs, multi-level link detection, and self-check mechanisms for automatic fault recovery and continuous, secure operation
  4. Versatile connectivity, wired/4G/WIFI network switching, IEEE802.11b/g/n WiFi support, and an Ethernet RJ45 interface for flexible integration with industrial systems
  5. Supports remote networking for point-to-point and point-to-multipoint communication, with compatibility for wireless transparent transmission and Modbus protocol
  6. High-precision independent GPS positioning for advanced location-based applications

Application :

●Smart Cities

●Industrial Automation

●Smart Agriculture

●Environmental Monitoring

●Utility Monitoring

Built-in 4G Module Wireless Parameters
Standards and Frequency BandsLTE-TDD: B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/ B28LTE-TDD: B38/B39/B40/B41WCDMA: B1/B2/B4/B5/B6/B8/B19GSM: B2/B3/B5/B8
Receiving Sensitivity-99 ~ -108dBm
Transmit Power+23 ~ +33dBm
Built-in WiFi Module Wireless Parameters
Standards & Frequency BandwidthSupports IEEE802.11b/g/n standard, max data rate 150Mbps
Receiving Sensitivity< -72dBm@54Mpbs
Transmit Power+16 ~ +23dBm(11g/b/n)
Built-in LoRa Module Wireless Parameters   Wireless RF
ModulationLoRa
Frequency Range433MHz ~923MHz (optional)
Transmission RateSpreading factor and bandwidth settings
Receiving Sensitivity-137 ~ -148dBm
Transmit Power+22dBm
Power Consumption
Maximum Transmit Current≤ 110mA (22 dBm)
Maximum Receive Current< 6mA
Interface Types
One LAN Ethernet Interface(RJ45 socket).Adaptive MDUMDIX built-in electromagnetic isolation protection
Antenna Interface1 standard SMA antenna interface (for 3G/4G);3 standard SMA reserved antenna interfaces(for WiFi, GPS, and LoRa)
Power Interface10~30V (standard DC12V 2A), with built-in power surge protection

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