Rain Bird 1ZEHTMR
Rain Bird 1ZEHTMR Digital Hose End Timer
Model: 1ZEHTMR | Brand: Rain Bird
Product Overview
The Rain Bird 1ZEHTMR Professional Grade Electronic Digital Hose End Timer/Controller is designed to automate watering for hose-end sprinklers, Drip irrigation systems, or soaker hoses. This digital timer offers 7-day programming capabilities and is built for dependable outdoor use.

Key Features
- Robust professional grade digital hose-end timer for use with hose-end sprinklers, Drip irrigation and soaker hose
- Simple-to-set automatic programming, 7-day scheduling and sophisticated functions provide worry-free watering convenience
- Extra-large dial and readout screen provide easy set-up and review of watering schedules
- One-touch override buttons for "Cancel Watering" (doubles as up to 96-hour rain delay) and "Water Now" (manual watering)
- Conveniently displays program status such as next scheduled water cycle, and time remaining on current cycle
- Provides maximum run time of 6-hours with up to 2-start times per day
- High 5 - 12 GPM flow rate operates up to (5) Impact Sprinklers
- Ideal for use with Rain Bird hose-end sprinklers and Drip irrigation kits
- Operates on two AA batteries (not included)
- Very Important: To prevent catastrophic damage remove timer from water supply when freezing temperatures are expected

Installation Guide
Before installation, ensure you have two AA batteries (not included). The timer easily threads onto a standard garden hose faucet.
Battery Installation
Locate the battery compartment on the back of the unit. Insert two AA batteries, observing polarity. Securely close the compartment.
Attaching the Timer
Thread the timer's female coupler onto your outdoor faucet. Ensure the gasket inside the inlet collar is fully tightened against the hose bib or hose fittings to prevent leaks. For optimal performance, consider adding a vacuum breaker/backflow preventer and a pressure regulator (sold separately) as shown in the diagram.


Operating Instructions
The timer features an extra-large programming dial and readout screen for easy setup and review of watering schedules.
Setting the Clock
Turn the programming dial to 'SET CLOCK'. Use the arrow buttons to adjust the current time and day. Press 'OK' to confirm.
Setting Start Times
Turn the dial to 'SET START TIME'. You can program up to two start times per day. Use the arrow buttons to set the desired start times. Press 'OK' to confirm each time.
Setting Duration
Turn the dial to 'SET DURATION'. Use the arrow buttons to set the watering duration for each cycle, up to 6 hours. Press 'OK' to confirm.
Setting Run Days
Turn the dial to 'SET RUN DAYS'. Select the specific days of the week you wish for watering to occur. Press 'OK' to confirm your selections.
Automatic Operation
Once programming is complete, turn the dial to 'AUTO'. The timer will now operate according to your set schedule.
Manual Watering ('Water Now')
To manually water outside of the schedule, press the 'Water Now' button. Use the arrow buttons to set a temporary duration, then press 'OK'. Watering will begin immediately and stop after the set duration.
Cancelling Watering / Rain Delay
To stop a current watering cycle or to pause scheduled watering, press the 'Cancel Watering' button. This also functions as a 'Rain Delay', allowing you to pause watering for up to 96 hours. Use the arrow buttons to select the delay duration, then press 'OK'.

Maintenance and Care
Battery Replacement
When the battery indicator on the LCD screen shows low power, replace the two AA batteries promptly to ensure continuous operation.
Winterization
Important:
To prevent catastrophic damage, always remove the timer from the water supply when freezing temperatures are expected. Store the timer indoors in a dry, protected area during winter months.
Cleaning
Clean the exterior of the timer with a damp cloth. Do not use abrasive cleaners or submerge the unit in water.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Timer not watering | Low batteries, 'OFF' mode, faucet off, clogged filter | Replace batteries, turn dial to 'AUTO', open faucet, clean filter |
| Leaking at connection | Loose connection, missing/damaged gasket | Tighten connection, check/replace gasket |
| Display is blank | Dead batteries | Replace batteries |
| Water flow is low | Low water pressure, clogged filter | Check water supply, clean filter |
For further assistance, please refer to the official Rain Bird support resources.
Product Specifications
| Brand | Rain Bird |
| Model Number | 1ZEHTMR |
| Color | Green/Black/White |
| Material | Plastic |
| Product Dimensions | 3.1"D x 6.25"W x 5.37"H |
| Item Weight | 1.22 ounces |
| Power Source | 2 AA batteries (not included) |
| Working Water Pressure | 15 psi minimum to 90 psi maximum |
| Working Temperatures | Keep from freezing; 110° F maximum |
| Flow Rate | 5-12 GPM |
| UPC | 077985024406 |
Warranty and Customer Support
Rain Bird products are designed for durability and performance. For specific warranty information, please refer to the documentation included with your purchase or visit the official Rain Bird website.
For technical support or inquiries, please contact Rain Bird customer service.
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