Holman 2 Dial Low Pressure Water Tap Timer – Garden Balcony Irrigation Controller (SKU: CO1603)

The Holman CO1603 2 Dial Low Pressure Tap Timer is designed for gardens, balconies, and tank-fed systems where water pressure is too low for traditional timers. It’s a breeze to install—no plumber or wiring needed—and offers reliable irrigation control through a battery-powered system that suits any DIY enthusiast.

With its dual-dial interface, this timer provides simple, intuitive control: one dial for frequency (up to 24 starts per day), and one for duration (up to 120 minutes). Whether you’re watering hanging baskets, flower beds, or potted plants, this device ensures consistent and measured watering, even with low pressure or gravity-fed water sources.

Key Features:

• Battery Powered: Uses 2x AAA batteries (not included) with a battery life indicator
• Ideal for Low Pressure Use: Perfect for tanks, rainwater systems, and gravity-fed irrigation
• Auto & Manual Modes: Choose between programmed or instant watering
• Flexible Scheduling: Program up to 24 automatic starts per day
• Simple Programming: 3-step dial setup – no tech skills needed
• Durability: Max operating pressure up to 600kPa; burst pressure rated
• Compact Design: Lightweight and compact – perfect for above-ground outdoor use

Specifications:

• Model: CO1603
• Weight: 0.34kg
• Dimensions: 90 × 100 × 200 mm
• Fittings: 12mm Snap-on with universal tap adaptor
• Min Pressure: 50kPa | Max Pressure: 600kPa
• Material: Plastic | Colour: Black
• Use Above Ground Only | Min Temperature: 3°C

Whether you’re managing a small balcony garden or conserving tank water with gravity-fed irrigation, this timer makes watering automatic, consistent, and stress-free.

FAQ – Holman 2 Dial Tap Timer (CO1603)

Q: Does this work with rainwater tanks?
A: Yes, it’s specially designed for low-pressure systems including rainwater tanks and gravity-fed setups.

Q: How is it powered?
A: It runs on 2x AAA batteries (not included) and features a low battery indicator.

Q: Can I program multiple watering times?
A: Yes, you can program up to 24 watering starts per day with different durations.

Q: Is this timer weather-resistant?
A: Yes, it is designed for outdoor use above ground, but should not be used in freezing conditions.

Q: Can it be manually activated?
A: Absolutely! There’s a manual override option for instant watering.

Evaluation & Recommendation

Ideal for:

• Homeowners with water tanks or low-pressure systems
• Balcony gardeners using gravity-fed irrigation setups
• Anyone seeking an affordable, automatic watering solution with multiple start times

Not suitable for:

• Freezing environments (below 3°C)
• High-flow commercial or multi-zone irrigation needs

Installation Tips:

• Attach the timer to a standard garden tap using the included adaptor
• Install 2x AAA batteries (observe polarity)
• Set watering frequency and duration via the two dials
• Connect your hose or system and test manually before leaving unattended

Need help choosing the right timer for your system? Reach out to us for expert support!