Contains 2-mini 5-button high frequency (433.92) remote transmitters (XT-33) w/blue LED - Features 56 bit random code hopping with over 75 trillion available codes - Dedicated chirp delete from remote - Passive arming by-pass and auto rearm from remote and code learning / anti-scan receiver - Unique dedicated remote panic and car locator back-up memory system and shift button for 2nd car operation Autopage 3-Channel 2-Stage Shock Sensor Alarm Mini Transmitters with Blue LED