Includes digital alphanumeric receiver with 2 zones. Small transmitter 2 trigger zones plus manual page Installer-tunable transmitter for max. range Alphanumeric display of car/zone break-ins Transmitter: Monitors up to 2 zones per vehicle, plus manual paging. Manual paging button included. Connect to nearly any type of vehicle alarm. Miniature size. Easily concealed anywhere inside car. Positive and negative, instant triggers. Range up to 1 mile, depending on environment, installation, and/or antenna. Over 1 million possible coding combinations. Connect to a CB antenna, car AM radio antenna (cable included), or strip antenna. Automatic power antenna control. Immunity circuit to eliminate false alarms. Belt-clip receiver: (Discontinued model E-35RD was included with SECOPAGE 35E; model E-35RV, with vibrate mode, is included with SECOPAGE 35EV and as a replacement for the E-35RD) Code learning receiver learns up to 3 transmitters. Alphanumeric display indicates which zone (1, 2, or manual) of which vehicle (A, b, or C) was triggered. EEPROM stores codes up to 1 year without power. Stores the last 6 pages for easy recall. Unattended page indicator. Low battery indicator (2 AAA batteries not included).