Stock availability type: B - small quantities in stock
Introduction
The model offers a rich combination of input-output ports in a housing for DIN rail mounting and a "two-story" configuration. There are 4 channels available for counting pulses from energy, flow (water, gas) and other measuring devices, which are equipped with a standard >60ms pulse output (optocoupler output). In addition, there are inputs for NTC temperature sensors (TNS010), as well as RS485 port. The standard 8 alarm (analog) inputs and 8 relay outputs are provided. All input-output circuits are provided on screw terminals.
The model supports "Passive PoE In" - it can be powered with (11-15)VDC through the free pairs of the UTP cable: 4/5='+', 7/8='-'
The model comes standard with a "ModBus Master" software module!
You can open a comparison table of different models from here.
Input-output channels in NetControl 8R2NT4PC1RS8A
- 4 channels for pulse counting of electricity, water, gass, etc. meters
- RS485 interface 1pc.
- switch on-off/reboot (relay 2xN.O + 6xSPDT) of up to 8 appliances for up to 7A/240VAC (with ability of automatic reboot on PING lost to 8 IP addressеs)
- 2 input for NTC temperature sensor (TNS010)
- 8 alarm inputs for mechanical contact/button or AC voltage detector VDS300 for signalization (SNMP trap,MQTT, SPC Cloud) of events. Other sensors also possible to connect here, as inputs are analog type.
- Housing made of light gray ABS V0 (self-extinguishing); dimensions 105x65x90mm
Basic functions and network protocols supported
- 10/100 BASE-T Ethernet (Auto MDI/MDIX) with differential overvoltage surge protections
- Supported protocols ARP/DHCP/ICMP/TCP/IP/SNTP/SNMP/TFTP client/WEB server/MQTT/SPC Cloud
- 802.1q VLAN support
- SNMPv1 (ONLY snmpget/snmpset) protocol for access to all parameters and functions
- SNMP traps and MQTT events generation on input change
- Flexible user-defined system of sequences of actions (Macros)
- Start of macros on analog input change (Automation)
- Start of Macros on PING lost to IP addresses (PING monitor)
- Real-time software clock (RTC) with the ability to start Macros at user-defined time
- WEB access to all parameters and functions
- TFTP client for firmware update
- Firmware update in Web interface
Applications
- Remote energy measurement with 4 channels for pulse counting of electricity, water, gass, etc. meters
- RS-485 <-> TCP / MQTT data transfer. Modbus protocol supported.
- "House/Room Controller" for hotels, guest houses, etc.
- Access control systems with remote control/access over IP
- Automation systems with remote access via the Internet
- IP alarm system, such as panic buttons in hotels or security of telecommunication cabinets.
- restart (automatically in case of PING loss / manually) of network equipment (routers, ADSL modems, servers, etc.)
- general purpose 8 channel relay module with Web/SNMP/MQTT/SPC Cloud/ModbusTCP control
- Remote temperature monitoring systems
Software versions specific to this model
Firmware "Access Control" (factory default, requires device after 01.08.2025)
Please, read description file first, before using this firmware.
Firmware "Wiegand Events"
Please, read description file first, before using this firmware.
Application notes
User manual, specs and SNMP MIB
Latest standard firmware image (also publicly available by TFTP at 84.40.112.77)
This is a standard firmware version that does not contain specific modules, such as ACCESS CONTROL, MBMASTER, etc.!
IMPORTANT! Before updating, please read "FirmwareRevisionHistory.txt" from archive for information on how the new version will affect your current settings!
Software releases with special functions
Please, read the supplied documents before usage!
Firmware "Electricity prices/ModbusMaster MOD"
Firmware "ModbusMaster"