The rechargeable car alarm system TX-168 is a multifunctional anti-theft gadget designed for DC12 or 24V cigarette lighters. It has a detection range of 120° cone angle and a very loud alarm sound of 105 dB to deter thieves. It features a panic alarm button and an additional external 105 dB siren for the engine compartment to attract even more attention. The TX-168 has two ports for charging external devices: a USB port with a total output of 5 V/2.4 A and a USB-C port with a total output of 5 V/3.0 A. The built-in 500 mAh lithium-polymer battery can be charged in about 2 hours via the cigarette lighter socket of a car, truck, RV, or boat, or at home/office using a micro-USB cable (not included). The input voltage of the car alarm system/siren is DC12 or 24 V, and the operating current of the siren is 100 mA. The automatic alarm is triggered by motion detection through the PIR sensor at a distance of up to 3 m. The car alarm duration is a maximum of 2 minutes, while the siren can sound for up to 30 seconds. With the fully charged built-in 500 mAh battery, the device has an operating time of approximately 7 days and a standby time of about 10 days, even when the engine is off. The remote control has an operating range of about 10 m and is included with a CR2032 battery. The TX-168 car alarm is quick and easy to install, and you don't need to be an engineer to set up and operate this anti-theft gadget. It can also be used as a standalone device, and up to 3 remote controls can be paired with the unit.