Wattwatchers CTO Jon Keeble does a quick download on favourite features of the energy monitoring devices he’s created:

• Wattwatchers devices can be thought of as internet appliances.
• 6-channel products includes 6 energy meters.
• The 6M communicates over 2G/3G, and 6W over WiFi.
• Devices have three phase voltage inputs P1-3.
• They support 6 current transformers (CH1-6).
• CH1 and CH4 are by default associated with P1, CH2/5 with P2, CH3/6 with P3.
• 3M is the same as 6M except it has only 3 energy meters.
• Many parameters are OTA (over the air) configurable.
• The default associations between P1-3 and CH1-6 can be changed (OTA re-configured).
• Power data is reported at 5-second intervals (configurable to large values).
• Energy data is logged in the meter in 5-minute fixed intervals.
• Hosting services request energy data and so don’t miss data.
• Devices continue to log energy data for weeks even when comms is ‘down’.
• Devices connect to up to two hosting services.
• Devices keep time using an internet connected time server.
• Devices report to and are supported by the WW DMS (device management server).
• The DMS supports installs, and provides configuration, code update, and data validation.
• Devices have no physical controls.
• Factory fitted options support load control and Modbus RTU functions.
• 6W WiFi is configured using a smart phone (WiFi connection and browser).
• 6M is highly secure, using the mobile network and secure internet connections
• 6W protocol uses HTTPS, like a bank.
• 6W supports 802.11b/g/n on 2.4GHz, not 5GHz. Range is better on 2.4GHz.
• Device code update is highly secure.
• Even if a WiFi WPA2 network is penetrated (password stolen?) HTTPS remains secure
• Devices cannot be used to penetrate a WLAN network
• The data in a utility meter mounted outside a house is easily accessed; no password!
• 6M generates about 17MB/month reporting every 30 seconds.
• 6M data can be reduced arbitrarily to about 2MB/month, reporting infrequently.
• Multiphase installs require CT’s to be correctly located: WW on-boarding tools can help.
• Wattwatchers tested to comply with Australian, NZ, European and US (1Q18) standards.