Lone worker regulations for each country
Requirements for lone worker safety and the use of PASS devices are controlled by standards and regulations.
National Fire Protection Association: NFPA 1982
This standard specifies that the device will go into pre-alarm mode after 20 seconds of inactivity and full alarm mode at 30 seconds of inactivity. The alarm can also be activated manually. The pre-alarm is required to reach a maximum level between 100 dba and 110 dba in six seconds. The primary alarm must have a minimum level of 95 dba at one meter and be able to maintain the level for at least one hour.
British Standards Institution: BS 10999-2010
This standard specifies a lack of movement for 30 seconds will cause a 10 second pre-alarm audible signal. If no movement occurs during this period then the unit will lock into full alarm. The unit can be manually set to full alarm by pressing a push-button.