Rockrose Technology WDTX21 Users manual

Before you begin installation, take the following
steps:

1. Replace your timer’s battery so that your
sprinkler times are saved.

2. Make sure your timer is set to your high
season settings – those settings when your
sprinkler times are longest.

3. If your timer has a “Water Budget” or
“Seasonal Adjustment” feature make sure it
is set to 100%.

Detailed Installation Instructions:

1. After disconnecting the power to the timer,
attach one of the BLACK wires from the WaterDex
Receiver to each of the timer’s power terminal’s
(typically labeled 24VAC). The BLACK wires can be
connected to either terminal in any order.

2. Remove the wire(s) from the timer’s terminal
marked COMM or Common and connect either
one of the BLUE wires from the WaterDex Receiver
to this terminal.

3. Using the supplied wire nut, connect the
wire(s) removed from the COMM or Common
terminal to the second BLUE wire from the WaterDex
Receiver. Again, the BLUE wires can be connected
in any order. NOTE: The GRAY wire is an antenna
and not connected to the timer.

4. Installation is now complete and power may
be reconnected to the timer. The LEDs on the
WaterDex Receiver will briefly flash in an alternating
pattern.

5. To pair the WaterDex Receiver to the
Remote Control, press the recessed button at the
bottom of the Receiver. The Receiver’s Green “Link”
LED will flash indicating that it is ready to be paired
with the WaterDex Remote Control.

6. Remove the back cover from the WaterDex
Remote Control and install two “AA” batteries. The
LED on the Remote Control will flash for 10 seconds
while connecting to the WaterDex Receiver. The
“Link” LED on the Receiver will remain solidly lit when
successfully paired.

7. The WaterDex Remote Control transmits the
watering setting whenever the dial is moved. The
LED will flash for 10 seconds while transmitting. If the
LED continues blinking rapidly, this indicates low
battery.

Log on to www.WaterDex.com and enter your ZIP
code to get your local setting. Set your Remote
Control to the suggested value and start saving
MONEY!

INFORMATION TO USER
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause

harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired
operation.

This equipment has been tested and found to comply with the limits for Class B Digital Device, pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates and
can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures.

• Reorient or relocate the receiving antenna

• Increase the separation between the equipment and receiver

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected

• Consult the dealer or an experienced radio/TV technician for help
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate

the equipment.