This module is for billing products hourly via WHMCS.
You can enable hourly billing for any product in whmcs, you can set the hourly price up to a chosen maximum e.g. 0.10/hr up to 10.00/mo
You can set prepay/postpay. Prepay requires a user to have credit available and post pay will be invoiced monthly.
If prepay and credit reaches 0 the service will be terminated, there is however the option to set a grace amount. So if the credit gets to 0 it won’t be instantly terminated and the grace amount will be invoiced at the end of the month.
You can also set a low credit warning amount, then if a user has an active service they will get a daily reminder to top up.
There is also a minimum charge option which lets you choose how the first hour is billed, when a service is created it starts the charge from x hours e.g. If set to 0 then hour 0-1 is charged at 0 hours, If set to 1 then hour 0-1 is charged at 1 hour, If set to 2 then hour 0-1 is charged at 2 hours etc. (each hour after this will be charged at 1 hour)
Documentation can be found in our WIKI