The SRP-T is the most immediate upgrade from the manual (SRP-M) model. The SRP-T has a mechanical timer that can be set to a desired time, say 10 minutes, and then will pump for that period of time and automatically shut off.

The benefit from the SRP-T model is the ability to set a time to pump water then walk away as it will automatically turn itself off. As our most popular model our clients find the mechanical timer easy to use and it saves them time versus manually watering their plants. This is of course assuming that the SRP-T is connected to a micro-drip irrigation system.
Why Choose the Solar Rain Pump - Timer model?

This is a close up of the mechanical timer on the SRP-T. This model is the 15-minute model meaning the pump can be set to run in the range of 1 minute to 15 minutes. We also offer as an upgrade a 60-minute mechanical timer that can run in the range of 1-minute to 60 minutes. We recommend the 15 minute model as most drip lines will need the 15 minutes of watering as a maximum.
This video is of the older first generation model, new video will be available soon