How many Bluetooth® Tap Timers can I run with the Holman Water app? Holman Industries 06 March 2020 00:55 Updated Follow Holman Water will only control the Bluetooth® Tap Timer (CO3015) Holman Watercan run up to 8 Tap Timers: Only 1 Tap Timer can run at a time, so they must be programmed so their watering schedules don't overlap Related articles Why won't my Bluetooth® Tap Timer connect to Holman Water on my mobile device? How do I know when the batteries in my Smart Moisture Sensor (WXMS) need replacing? Which HOLMAN app should I use to control my Tap Timer? How do I program my Tap Timer? Can I run my Tap Timer off a low-pressure or gravity-fed system? Comments 0 comments Please sign in to leave a comment.