TCP/IP voltmeter & relay.

TCP/IP voltmeter/relay is a universal device for measuring DC voltage over the Internet. The use is mainly in measuring and monitoring voltage at a distance. It is suitable e.g. for measuring batteries in solar systems and other devices that are powered by batteries. This board contains 2x DC voltmeters and 3 relays to control various devices. Voltmeter inputs are galvanically isolated from the board.

Technical parameters :

• Board size : 96 x 119 mm
• Board supply voltage : + 5V to + 28V DC
• Board current consumption : 77 mA / 12 V
• Voltmeter measurig range : 0 - 70 V DC ( both polarity +/-)
• Voltmeter resolution : 0.01 V
• Voltmeter input impedance : 1 MOhm
• Voltmeter speed measurement : 2 times/sec

Reading measured data.

Data can be read in different ways. Via web browser, TCP client, SNMP client, reading XML file.

SNMP v2.

Data can also be read via SNMP protocol. The device contains an SNMP agent v2...

TCP server on port 9760.

The TCP/IP voltmeter contains a TCP server that listens on port 9760. It is possible to read the measured data using a TCP client.

Sending data to cloud ( Thingspeak ).

Data can be sent to the Thingspeak.com cloud. ThingSpeak is an cloud service that allows you to store, visualize and analyze your measured data.

Sending data to remote database.

TCP voltmeter contains a TCP client that can send data to a remote database using the POST method.

Sending alert.

The device allows you to send an alert if the value of any voltage reaches a certain set value.

Static and dynamic IP address.

The TCP voltmeter can have a dynamic IP address or a static IP address. The dynamic IP address is obtained from the DHCP server, the static address can be configure in Network Settings manually.

Dynamic DNS.

the board supports well-known DNS services : noip.com , dyndns.com.