Set Smart Power saving modeCommand: PS1 – (send SMS with the text “PS1” from an authorised mobile)The device has a built-in motion sensor. With this mode activated , the GSM chip is always onbut the GPS chip is only activated by motion or an incoming call or SMS.※ To turn off this function, please send “PS0”.Set Deep Sleeping ModeCommand: DS1 – (send SMS with the text “DS1” from an authorised mobile)Both the GSM and GPS chip will be off to save power, they can be only activated by motion. Once it activated theywill run for 15 minutes and sleep again if no further motion is detected.※ To turn off this function, please send “DS0”.Note: When the devices battery is lower than 20%, it will send an SMS alarm “BAT: LOW! + GPS INFO” to allauthorised numbers.Power SavingTel: 0808 254 0247