Pandora PS-331BT Siren Posted on May 10, 2019 by admin The NEW siren to be released shortly by Pandora. The PS-331BT offering a VERY loud 130 db siren with full on board battery back up. This will be added to the Thatcham approved range of Pandora systems to allow them to go through Thatcham testing. The great part about this siren is no wiring has to be routed through the vehicles firewall ( interior cabin to engine bay ) meaning no holes need to be made in grommets or holes drilled in the metal to gain entry.This also offers a temperature sensor which can be mounted to the vehicles engine or coolant pipes which give a temperature reading on the Pandora app or remote control. The PS-331BT connects via a Bluetooth connection which is highly encrypted to stop forms of cloning or blocking in order to try and disable the system.Pandora Russia have tested this siren to the extreme. They have blown it up, driven over it, put it in a bucket of water and it still works after all this! Pandora has also made the siren to ISO approval standard.