Model Number: HA28-3 Brand Name: Mosaic Key Specifications/Special Features: Key features:·Powerful hands free speaker phone·Easily programmed·Battery backup in case of a power failure·Pendant range up to 50 meters(167feet)·Easy to install, simple to use·No ongoing fees·Peace of mind all the time
Spec.:

·Paired with PABX phone system
·Auto dial3 sets of programmable number with max 16 digits of each number
·Recordingvoice message Max.6 seconds
·Two way communication(talk and listen)
·Radio frequency: 433.92MHz
·AC adapter(optional): input 110~240V AC, output 6V DC
·Powerback up:4pcs AAA alkaline batteries (not included) for the main unit
· 1pc A23S battery for the pendant(included)
·With battery low indicator804
·One year warranty
·Dimensions: 120mmx 165mmx 42mm（W×H×D）