SN-920 Cordless Phone System Overview The EnGenius SN-920 Phone System offers 4x more power than 2.4 GHz phone systems on the market. With this long range, 2-way radio system phone, never miss a call, expand to fit your needs, and receive the mobility and flexibility you demand. Features: . Longest Range- up to 12 floors in-building penetration; 250,000 square feet in manufacturing plants, warehouses; 3,000 acres on farms, ranches . Two-Way Radio- Independent of the base unit, Talk and listen at the same time, No group chatter or push-to-talk. . Expandable system- grows with your business up to 4 lines (1 line per base unit) and 36 handsets . Call manager- program your handset by individual base unit to receive all calls or just transfered calls . Rapid charger recharges battery in 80 minutes using Nickel Metal Hydride Battery packs . One year limited warranty . Change battery while a call is on hold . Vibrate mode . 4-line illuminated LCD . Caller ID with call waiting- stores 30 calls . Frequency hopping security- 200 times per second . Digital Privacy and claritySN-920 Cordless Phone System