BX4 4x Outlet Bluetooth® Tap Timer

The new BX4 4x Outlet Bluetooth® Tap Timer controls watering for your medium to large sized garden. The 4x outlet is water restriction friendly and allows you to make adjustments from the comfort of your own mobile. Easily choose from different watering durations, flexible scheduling and interval watering, all from the iGardener™ App.

  • Water restriction friendly with flexible scheduling, 7-day, interval and more
  • Bluetooth® control with iGardener™, available on the App Store and Google Play
  • 20m range from Tap Timer to smartphone (connects to one device only)
  • Manual ON/OFF button on Tap Timer
  • Long watering times from 1 minute, to 23 hours 59 minutes
  • Misting control with spray intervals down to the second
  • 2 Year Warranty

iGardener Smartphone App

For FAQ and support, please visit our help centre

Outlets: 4
  • CO3111 BX1 Bluetooth Tap Timer
  • CO3112 BX2 Dual Outlet Bluetooth Tap Timer
  • BX4 4 Outlet Bluetooth Tap Timer
Available at Bunnings
SKUCO3114 Categories, Tag
Barcode: 9319841521171


Colour (Tap Timer)Grey
Water RatingIP54
Water Pressure50kPa – 800kPa
Water Flow1L/min – 35L/min
Auto Shut OffYes
Battery Back-UpYes
Digital DisplayNo
Hose-End CompatibleYes
Manual BypassYes
Maximum Cycle Time23hr 59min
Number of Cycles3
Number of Zones4
Odd/Even Day ProgramYes
Water restriction friendlyYes
Range from Tap Timer to mobile20m
Batteries Required4 x AA


View BX4 Manual

LED patternMeaning
Red/Blue alternate flashStart up pattern (recognition of batteries/power)
Blue flash 3 timesStart up complete
Quickly flashing blue (10 times)Updated over Bluetooth
Single blue flashResponse to pressing button – manual on or off
Blue flash 0.5 seconds on, 20 seconds offWatering
Purple (pink) flash on start upStart up error – press Bluetooth button (start/stop) to clear
Purple (pink) solid lightError – reset device to clear
Red light on start up
Red flash 0.5 seconds on, 15 seconds off
Low battery warning – timer is not able to operate normally in this mode. Replace batteries.
Red Flash 3 timesStart button pressed when dial is in ‘OFF’ position
Start button pressed when timer is in low battery mode

Resetting the BX Tap Timers:
Before a hard reset, we recommend that the timer is removed from the iGardener app – use the ‘bin’ icon at the top of the page to remove the highlighted tap timer prior to reset –

BX1 hard reset – remove battery compartment for 2min, press and hold button as you push the compartment back in, device will flash blue quickly, let go of button. Add timer back into iGardener.

BX2 hard reset – move dial to ‘OFF’, press and hold the button, watch for 3 quick red flashes, let go of button. Add timer back into iGardener.

BX4 hard reset – move dial to ‘OFF’ press and hold the button, watch for 3 quick red flashes, continue to hold for 6 seconds, 3 more red flashes will occur, let go of button. Add timer back into iGardener.

Scheduling Options

Scheduling Options

  • 7 Day – allows manual settings for each individual day
  • Interval Days – watering will occur every few days, as set by the user. Ideal for homes with automated watering restrictions.
  • Odd Days – watering will occur on the odd days of the month, with the option to skip the 31st of the month. Ideal for homes with automated watering restrictions.
  • Even Day – watering will occur on the even days of the month. Ideal for homes with automated watering restrictions.
  • Cycle – watering schedule will observe an allocated delay time and water for the allocated run time on selected days. Ideal for misting systems, GreenWalls and greenhouses.

Customer Reviews

Based on 8 reviews
Jeremy (Perth, Australia)
Works beautifully

Had this in for over a year
Use it a 4 station control for my lawn
Very happy

Absolute crap

Had it for less than a year and for some unknown reason it won't turn on automatically and even on manual I have to press start button several times for it to run.

Hi Joe, we're sorry that your BX4 is not working. If your tap timer is outside during Winter, this can affect its longevity. In really cold climates, we suggest that you remove the battery and make sure there is no water left inside the tap timer. If you live in an area that gets frost, we recommend taking off the tap timer completely and storing it away in the meantime for the longevity of the product. Thank you.

Tom Hunwicks (Brisbane, Australia)
Second unit to fail within 6 months

This is my second unit within 6 months, both have done the same thing. At first I thought it was flat batteries so I have replaced them, and still absolutely no power to the device and this second device is less than 2 months old. Water has made its way in on both devices through to where the batteries are stored, don't know if that's the issue, but this one will be going back as well and I will not be buying another.

Kevin Patterson (Hobart, Australia)
Very Good Product

Bought the BX4 to replace an older manual Holman 4 outlet timer tap. Works really well and easy to program especially when times need to be adjusted for daylight savings and water rationing. Can just stand on my front deck and reprogram without having to fight through the garden to do it. Would recommend.

Lindsay Wood (Perth, Australia)
BX4 Rubbish !

I have had 2 of these in the last 18 months, they don't last through one summer.

The fitting that connect to the Tap break off and the internals end up giving up the ghost after 6 or so months.

I should have known better after experiancing the several BX1's I purchased.

Hi Lindsay,
Thank you for contacting us. We're sorry to hear your BX4 Tap Timers have not performed as expected—this is not the quality we expect from our products. To better understand the specific issues you have encountered and provide appropriate assistance, we kindly request that you reach out to our customer service team. In addition, our customer service team can assess if your tap timers are still under warranty replacement. This can be emailed through the contact page on the website or at support@holmanindustries.com.au.
We look forward to helping soon.

Holman Team

Richard Lam (Adelaide, Australia)
Great in Theory however not reliable

I have a BX4 and a BX2 and overall I am on the fence about being happy with them despite issues with my watering setup. I guess there are very limited options in terms of Bluetooth timers. WiFi ones are just too expensive at the moment so despite the issues. I’ll be happy to recommend the products The app works fine, but it certainly isn’t natural. If you aren’t great with a phone, find someone who can help.

My setup on the BX4 and BX2 consists of pressure restrictor to 300KPa, flow discs, weeper hose and hose end sprinklers. I’ll probably switch to a proper irrigation next year. I’ll start off with the bigger issues. 1 - If you are going to pair this specifically with the Holman weeper hose and their included flow discs, be very wary that they will produce a very loud high pitched whine which can be heard through closed doors and windows. I had to end up using the white flow disc to stop it, but that has its own issues. If you only going to use this with some other flow device, pressure regulator or a irrigation system you probably wont have the high pitch whine issues. 2 – with the BX4 Iended up repalcing 2 under warranty and i think its a power/battery issue, Somehow water floods he battery compartment or internally which gave me purple warning lights. The purple lights are not described in the instructions but starting working again 2 days later. 3 – with the BX2 I am having a intermittent issue where sometimes the watering doesn’t start. I had to mess around in the app to delay the watering by a few minutes after the first “zone” finishes. Anyway I’ll keep monitoring this. I can certainly hear the BX2 trying to turn on and off the zone! Small issues, after 1.5months of ownership it looks like the text and red/green colour is starting to fade

Terry Renneberg (Newcastle, Australia)
So good

This is so versatile and easy to program. I bought it to automate the watering of my garden and lawn while on holidays. Before I had multiple timers on multiple taps that were difficult and confusing to get right. I am so happy with this device.

David Large (Perth, Australia)
Just bought today Fri 11/03/1922 BX4 Bluetooth tap timer.

My last Holman gave up the ghost today it was not that old, the reason was water ingress from a leaking tap up to today it had served me well.
I have purchased a BX4 today and downloaded the required app, found it reasonably easy to set up and program and at 81 years that's saying something, I have covered the Bluetooth tap timer with a rubber shield to reduce the chance of water ingress. this is my only complaint about these products, why should we need to cover equipment that the manufacturer knows it will be used out doors and subjected to all weather conditions. I have three previous models in my shed that failed in the same fashion as my last one, the replacement cost me $129.00.

BX4 4 Outlet Bluetooth Tap Timer

Take full control of your garden watering and lighting with a Bluetooth® connection and a tap of your iPhone or Android. Our BX4 4x Outlet Tap Timer is built for the iGardener™ smartphone app!


Water restriction friendly with multiple day selection options

BX4 Zone Scheduling iGardener

Connect and manage devices from your smartphone

iGardener watering devices cropped bx4

Package Includes:

  • 1x BX4 4x Outlet Bluetooth Tap Timer
  • 1x 20/25mm tap adaptor
  • 4x 12mm snap-on hose fittings
BX4 4 Outlet Bluetooth Tap Timer Packaging Cutout

Tech Specs:

  • BX4 requires 4x AA Batteries
  • 30-1200kPa operating pressure
  • 3ºC MIN working temperature
  • 20m range from Tap Timer to smartphone (connects to one device only)
BX4 4 Outlet Bluetooth Tap Timer

Take control
with iOS and  Android

Get it on Google Play