Hunter Pro-C Main Base Module 466500 for ProC PC300 PC300i Controller Timer[Product Information]- Replace the Main Module if it's defective instead of the entire timer.
- For the indoor and outdoor Pro-C PC-300 & PC-300i.
- Has the Common and P/MV terminals & Zones 1， 2 and 3 terminals.
- The Black Modules are backwards compatible with the timers that have the grey modules
