Rain Bird RSD-BEX Rain Sensor Sprinkler Shut-Off
The Rain Bird RSD Series Rain Sensor automatically shuts off your sprinkler system when it rains, so you don't have to worry when you're home or away. The RSD Series Rain Sensor easily connects to most irrigation system controllers. RSD Series Rain Sensors offers flexible, multiple rainfall settings which are quick and easy to adjust with a twist of the dial.
- Multiple rainfall settings from 1/8 to 3/4 in. (5 - 20 mm) are quick and easy with just twist of a dial
- Adjustable vent ring helps control drying time
- High-grade; UV-resistant polymer body resists the elements
- Rugged aluminum bracket and arm extend a full 6 in. (15.2 cm)
- 25 ft. (7.6 m) of UV resistant extension wire (RSD-BEx model only) offers an easy connection to irrigation controllers
- Works with all popular 24 VAC controllers
- UL and cUL Listed; CE and C-Tick approved
- Input required: low voltage 24 VAC (not recommended for use with high voltage pump start; pump start relay circuits or devices)
- Switch electrical rating: 3A @ 125/250 VAC
- Station load capacity: Up to three 24 VAC; 7VA solenoid valves per station plus one master valve
- Wire: 25 ft. (7.6 m) length of #20; 2 conductor extension wire (RSD-BEx model only). Short lead for normally open (N.O.) installations.
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The wireless unit also works well. The downside I have found with the wireless unit is that the receiver unit does not have a locking door and if installed in a lockable cabinet (commercial sites) the signal strength is reduced and therefore limits the distance between transmitter and receiver.
From the specifications document:
The rain sensor shall employ an electro-mechanical actuating device designed to cause a circuit interrupt that temporarily disables the irrigation controller during periods of significant
rainfall. The device shall automatically restore the controller to a normal operating condition after a period of time subsequent to the
The device shall be suitable to be wired – normally closed (N.C.) – in series with the valve common; and, shall include a short-lead to allow wiring normally open (N.O.) when necessary.
My controller has terminals for a rain sensor but I have an 11-zone system. Does this mean that this won't work for some reason?
Sprinkler Warehouse asked if I could answer your question.
The electrical rating is confusing but you can ignore it for your purposes. The rating means the sensor could be used to control the six solenoid valves directly (without a controller). This would be done by wiring them in parallel and passing them all through the sensor. You have a controller so this is not what you want to do.
You would connect the sensor to the sensor terminals of the controller and the controller would handle the current for the sprinkler valves in all of your zones. You could have hundreds of zones. The only thing the sensor does is inform your controller whether it has rained.
I don't know what are the electrical specifications for your controller but I am fairly sure its sensor input is well within the voltage and current rating of the sensor.
I hope this helps.
include built-in terminals for rain sensor lead wires.
Dedicated rain sensor terminals are usually labeled “sensor”,
“SENS”, ”S” or “SN” on the controller’s terminal strip.
Use the procedure below if your controller does NOT have
dedicated rain sensor terminals.
1. Disconnect the wire from the common terminal (“C”
or “COM”) on the controller’s terminal strip. Then
connect this wire to the red Rain Sensor lead wire.
2. Connect the black Rain Sensor lead wire to the
common terminal (“C” or “COM”) on the controller’s
I've had mine for 7 years and experienced no problems. I purchased one for my neighbor in May of 2010. He's very happy with his also.
This is a hard-wired sensor, so won't communicate with a wireless rain sensor receiver. This rain sensor is designed to be wired directly to the "sensor" terminals on your rainbird timer. I believe you would have to purchase a complete new wireless sensor kit (e.g. http://www.sprinklerwarehouse.com/Irritrol-Irrigation-Rain-Sensors-p/rs1000.htm) to replace your wireless sensor.
Hope this helps.
In the older days the only problem was if the Controller had dedicated Rain Sensor Terminals, or not.
Another thing to pay attention to, is a Rain Sensor is "Normally Open" or "Normally Closed" the early ones were always "Normally Closed" so that the Installer could use them to interrupt the VALVES GROUND on any Controller. Adding a "
I have a sensor so that the controller does not run when it just rained. Is this compatible with that sensor?
Jim and Laura
Don't know that controler
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