ERA-DSDCR: Can Two Kits Alert Both Receivers?
Two ERA kits can share sensors and receivers: up to 12 sensors, unlimited chime receivers, and a separate chime sound for each sensor.
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Frequently Asked Questions
Browse by product category below, or call our support team at 800-366-7235 Mon-Fri 9-5 ET.
Latest answers
The newest articles from our support team, based on the questions customers are actually calling about.
Do All Doorbells Have a Transformer? Wired vs Wireless
Only wired doorbells use a transformer. Plug-in wireless and battery doorbells do not, and video doorbells may or may not depending on the model.
How Far Can You Wire Strobes to an ERA-DCRX Receiver?
Quick answer: One 12 V strobe drawing 50 mA can be wired about 350 feet one way from an ERA-DCRX receiver using 20 AWG copper wire, based on a 3% volt...
Can I Use My Doorbell Power Adapter in Europe or Other Countries?
Yes—if your receiver’s power adapter is labeled 100–240V AC, 50/60Hz, it accepts standard household electricity in the USA, Canada, Europe, the United...
TXRX2000A receiver clicking when plugged in: who to call
A TXRX2000A receiver that clicks when plugged in, in any outlet or room, needs the manufacturer. Rodann Electronics makes it: 1-800-366-7010.
Which doorbell button do I need for a duplex?
A duplex with one shared front door needs one button per unit on a single plate, so each visitor can ring the right household. Pick the Lee BC203 if t...
Product line FAQs
Start here when you know the system family printed on the product or manual.
Support topics
Use these when the question is about installation, range, wiring, or a product type.
Common questions
Do your doorbells and alarms need WiFi?
No. Every system uses dedicated 433 MHz radio frequency — no WiFi, no app, and no monthly subscription. Push buttons and sensors pair directly to their receivers.
How do I choose the right range?
Measure the distance from the push button or sensor to where you need to hear the alert, then size up — walls, metal, and floors reduce real-world range. Our systems span roughly 150 ft to 4,000 ft, so most homes, shops, and long driveways are covered.
Can I expand a system or mix components later?
Yes. Systems are expandable within their series, and buttons, receivers, sensors, and transformers are sold individually — so you can add coverage or replace a single part instead of buying a whole new kit.
What is your return policy?
Every product carries a 30-day money-back guarantee. If it does not work at your location, return it for a full refund.
How fast do orders ship?
In-stock items ship within 1–3 business days with low flat-rate domestic shipping, plus expedited and international options at checkout.
Can I talk to a real person for help choosing?
Yes. Our US-based support team knows the products we sell and answers Monday–Friday, 9–5 ET at 800-366-7235. We have served customers since 1998.
Still need help?
Our support team knows the products we sell. Call or email and you will reach a real person.