There are 48 products.
4 channel MODBUS RTU relay module, with SPST relay contacts. RS485, up to 63 nodes

Modbus RTU (RS485) relay module with 4 outputs
RS-485 interface supporting up to 63 nodes
Non-volatile memory that retains relay status
LED indicator for communication status
Voltage supply: 5 - 28VDC
Watchdog functionality for communication loss
Isolated relay contacts
Shrimp switch: 250VAC / 30VDC 3Amp
No inductive load on relay contact
Memory for saving settings
Built-in 120 ohm termination resistor
DIN rail mounting
Firmware update via the interface
Dimensions: 52 x 91 x 59 mm
Operating temperature: -20 - +60°C

$147.57
Item number TDO340
On the way in
AC / DC voltage meter 0-264VAC, 0-370VDC with MODBUS RTU (RS485), +/-0.5%, 24 bit

AC and DC voltage meter with true RMS
Resolution: 24 bits
0-264VAC 0-60Hz (3 phases)
L1, L2, L3, N
0-+/-370VDC
Input impedance greater than 2.4Mohm
Modbus RTU (2-wire RS485)
Built-in RS485 termination (120 ohms)
Up to 63 units per RS485 Bus
LED for communication status
Response time: less than 50mS
Temperature: -20 - +60°C
Supply voltage: 5 - 28VDC
Dimensions: 86 x 59 x 35 mm


$222.97
Item number TSV300
On the way in
4G Global LTE alarm and remote control, M2M, Data logger, I/O with Digital and Analogue, 1-wire, Relay, MODBUS

Global 4G LTE Controller, logger and alarm
Supports all LTE frequencies
Setup via USB, SMS and HTTP API
USB setup - use USB cable with Mini B male
2 digital "dry contacts". High on contact
2 analog inputs, 0 - 10VDC or 4-20mA input (10bit)
4 relay outputs, COM, NO and NC
1-Wire input for up to 8 Teracom sensors
1 x RS485 for max. 8 MODBUS RTU sensors
Data logger with 70,000 logs
Upload data to HTTP/HTTPS Post in XML/JSON
SMS alarm and Email alarm to 5 recipients
Push mode – XML data is sent via HTTP Post to a remote server. Responses from server may contain relay setup.
10 to 28VDC, 370mA @ 12VDC - additional PSU
Dimensions: 158 x 119 x 34 mm
Weight: 470g
Temperature: -20 - +55°C

$538.75
Item number TCG140-4G
On the way in
4G Global LTE alarm and remote control, Input: 2 x Digital, 2 x Analogue, 2 x Relay output, 1-wire for sensors, MQTT

GSM/LTE alarm - 4G - Global version

Supports all LTE frequencies

Configuration via USB (Windows program) or SMS

2 x digital inputs with "dry contact" or "logic level" mode

2 x analog inputs from 0 to 60VDC, 10 bits

2 x relay outputs with NO/NC contacts

1-Wire interface for 4 Teracom temperature and humidity sensors

Input can be navigated with alarm text etc.

SMS alarm - up to 5 numbers

Email alert - up to 5 email recipients, SMTP with TLS support

1 relay can be activated with calls from up to 100 phone numbers

Push mode – XML data is sent via HTTP Post to a remote server. Response from server may contain relay setup.

MQTT 3.1.1 support

Firmware update "over the air"

Supply voltage: 10 - 28VDC, 2Watt - optional PSU

Dimensions: 109 x 65 x 32 mm

Weight: 152g

$380.64
Item number TCG120-4G
On the way in
TCW242 Data collector via Internet / LAN, 4 x Digital input, 4 x analog input, 4 x relay output

Web based Data Collector module with built-in WebServer

Supports MQTT 3.1.1 protocol

4 x digital input Dry - external contact without voltage

4 x analogue inputs with 0 to 10VDC, 0-20mA

4 x powerful relay outputs with NO/NC contacts

RS485 port

MODBUS RTU up to 24 registers (sensors)

Modbus TCP/IP support

Data logger with memory for 70,000 loggings

SNMP v3 support with trap alarm

4 schemes for real-time control of relays

Up to 24 independent alarms

Secure email

XML/JSON and HTTP API commands for client-server

Dynamic DNS support for DynDNS, No-IP and DNS-O-Matic

NTP time sync

Supply voltage: 10 - 28VDC - purchase PSU

Dimensions: 145 x 90 x 40 mm

$369.51
Item number TCW242
Physically in stock
1-Wire Temperature / humidity sensor for Teracom. -20 - +60°C 10 - 90%rH.

1-wire Temperature / Humidity sensor
Temperature -20 - +60°C
Humidity 10 - 90% RH
Temp tolerance +/-0.4°C at -10 - +60°C
Moisture tolerance ±3.0%rH at 20 - 80%rH
Long term operation ±0.25%/year at 20 to 80%rH
Long-term operation ±0.05°C/year at -10 to +60°C
Solution 0.1 %rH 0.1 °C
Power supply/consumption 4.0 to 5.5 VDC 5 mA
Dimensions 62 x 28 x 16 mm
Cable length 1 m

$93.40
Item number TSH202B
Physically in stock
Temperature and humidity sensor with 1-wire interface for Teracom controls

Temperature and humidity sensor
1-wire interface for Teracom controller
Temperature: +/-0.4 °C (-10 to +60 °C), max. +/-0.6°C
Resolution: 0.1°C
Humidity: +/-3.0% RH (20 - 80% RH), max. +/-5% relative humidity
Solution: 0.1% RH
Supply voltage: 4.5 - 26VDC
LED indicator for communication status
Long-term stability based on digital signal processing
Changeable bit rate and other communication parameters
Firmware update via the interface
Size: 81 x 81 x 30 mm
Weight: 66g

$149.77
Item number TSM400-1-TH
On the way in
CO2, humidity, and temperature multi-sensor. MODBUS RTU

Multi sensor for CO2, Temperature and Humidity
Interface: RS485 - MODBUS RTU
LED indicator for status of communication
Long-term stability based on digital signal processing
Self-calibration on fresh air for CO2 measurements
Changeable communication parameters
Non-volatile memory for all settings
Firmware update via the interface
Size: 81 x 81 x 30 mm
Weight: 66g
Supply voltage: 4,5 - 26VDC / Max. 150mA

$299.53
Item number TSM400-4-CPTH
On the way in
Temperature and humidity sensor with a MODBUS RTU RS485 interface.

Temperature and Humidity sensor
RS485 MODBUS RTU
Temperature: +/-0,4 °C (-10 to +60°C), max. +/-0,6°C
Resolution: 0,1°C 
Humidity: +/-3,0% RH (20 - 80% RH), max. +/-5% RH
Resolution: 0,1% RH
Supply voltage: 4,5 - 26VDC
LED indicator for status of communication
Long-term stability based on digital signal processing
RS-485 interface (2-wire) carrying up to 32 nodes
Changeable bitrate and other communication parameters
Firmware update via the interface
Size: 81 x 81 x 30 mm
Weight: 66g

$142.74
Item number TSM400-4-TH
On the way in
Combined CO2 and barometric pressure sensor with a MODBUS RTU RS485 interface.

Multi sensor for CO2 and Barometric pressure
Interface: RS485 - MODBUS RTU
LED indicator for status of communication
Long-term stability based on digital signal processing
Self-calibration on fresh air for CO2 measurements
Changeable communication parameters
Non-volatile memory for all settings
Firmware update via the interface
Size: 81 x 81 x 30 mm
Weight: 66g
Supply voltage: 4,5 - 26VDC / Max. 150mA

$277.28
Item number TSM400-4-CP
Physically in stock
Combined CO2 and barometric pressure sensor with a 1-wire interface

Multisensor for CO2 and barometric pressure
Interface: 1-wire (+/- and data)
LED indicator for communication status
Long-term stability based on digital signal processing
Self-calibration on fresh air for CO2 measurements
Interchangeable communication parameters
Non-volatile memory for all settings
Firmware update via the interface
Size: 81 x 81 x 30 mm
Weight: 66g
Supply voltage: 4.5 - 26VDC / Max. 150mA

$278.75
Item number TSM400-1-CP
On the way in
Data logger for temperature and humidity via Internet / LAN, SNMP v2 trap, NTP

Data logger for external temperature and humidity sensors
Sensors are not included - must be purchased separately, see selection
Memory for 70,000 measurements
Temperature, humidity and dew point can be displayed graphically
1-Wire and RS485 sensor interface
Up to 8 Teracom sensors can be connected
MODBUS TCP/IP support
SNMP v2 with trap alarm for 5 email recipients
Secure email
XML/JSON and HTTP API commands for client-server
Dynamic DNS, DynDNS, No-IP and DNS-O-Matic
NTP support for time synchronization
Remote firmware update
Supply voltage: 10 - 32VDC - purchase PSU

$232.48
Item number TCW210-TH
On the way in
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