RC 10 (OPTEX RCTD-20U) Long-Range Wireless Annunciator System

About This Product

Hear an arrival where an ordinary door chime may not reach. The RC 10 (OPTEX RCTD-20U) wireless annunciator uses digital transmission for entry alerts across a shop or workplace. 

Compatibility and operating environment

• Entry alerts: Use the system as a wireless chime for a door or other monitored point.
• Additional sensors: Multiple sensors can be ordered with the system; sensors ordered at the same time include batteries and are programmed before shipping.
• Staff notification: An optional pager system is described for communicating with employees around a shop; the pager is not listed as included.
• Doorbell/panic-button option: The RC 10 DB is described as a separate doorbell or help-call option, with a stated maximum range of 700 ft. Confirm the exact accessory before ordering.
• Weather exposure: The existing listing describes the RC 10 DB doorbell as water-resistant. It does not establish a weather rating or operating-temperature range for the complete system. Check the applicable OPTEX specifications before installation in exposed or extreme-cold locations.

Frequency and range

• Digital transmission: 418–430 MHz, as stated in the existing listing.
• System transmission: Up to 2,000 ft, as stated in the existing listing. Actual range depends on placement and obstructions.
• RC 10 DB accessory: Up to 700 ft, as stated in the existing listing.

What comes with the set

• One receiver, as confirmed in the product's customer Q&A. A second receiver is ordered separately.
• One transmitter

How to choose between wireless door-chime options

• Choose RC 10 when its stated long transmission range and optional pager integration matter more than a basic doorbell alert.
• Choose a basic wireless door chime if you simply need a visitor to press a button at the door; compare its stated range and weather rating for your installation.
• Consider a Dakota Alert door-chime option if a separate doorbell-style transmitter or mailbox-alert setup better fits the job. Check that product's included components and specifications before comparing range or weather performance.

OPTEX America warranties are stated to be honored through authorized dealers. Ask us about additional receivers, sensors, and pager options if you are building a larger alert setup.