La description

Txi-D v2 Features:

VIBRATION RESPONSE – Controls the ability of the alarm to sense line movement and vibrations.
BEEP SPEED – Helps maintain the best speed relationship as you adjust the RESPONSE.
MUTE – Mutes Txi-D v2 speaker.
MULTI COLOURED LEDs – Can be set to purple, red, white, blue, green and yellow.
DAY/NIGHT MODE – Allows LED brightness to be set for either mode.
NIGHT MARKING – LEDs glow at low level constantly in Night Mode.
32 TONES
8 LED BRIGHTNESS LEVELS
STEALTH MODE – Deactivates Txi-D v2 LEDs when you get an activation.
ADVANCED ANTI-THEFT SECURITY – Sends alert to your RX-D v2 when alarm is turned OFF or is moved.
LOW BATTERY CHECK - The battery condition is tested, if it is found to be low it gives a warning.