![Wireless Add-on Intercom - by Liftmaster 833-1LM Wireless Add-on Intercom - by Liftmaster 833-1LM](https://cdn11.bigcommerce.com/s-fdyqgtwe91/images/stencil/500x659/products/6777/11635/wireless-add-on-intercom-by-liftmaster-833-1lm-37__97637.1674634328.jpg?c=1)
The Liftmaster 833-2LM portable intercoms that provides convenient and expandable communication for your home.
◦Up to 1,000 foot range with no wires or power connection required
◦Transmission range up to 1,000 feet between units
◦Crystal clear, secure 900MHz digital communication
◦Advanced features include voice activation and monitor mode
◦Broadcast to all channels simultaneously or speak to one party with Secured Link
◦Single or multi-channel communication
◦Expandable with additional units (up to 12 per network)
◦2-year battery life; requires four AA batteries per unit (not included)
◦Compatible with the following LiftMaster® wireless intercoms (833-1LM, 831-2LM)
◦1-year warranty