All ventilating fans shall have suitable automatic devices attached to them for the purpose of sounding an alarm when the fan stops. The alarm shall be placed so that it will be seen or heard by a responsible person.
225 ILCS 705/31.19
All ventilating fans shall have suitable automatic devices attached to them for the purpose of sounding an alarm when the fan stops. The alarm shall be placed so that it will be seen or heard by a responsible person.
225 ILCS 705/31.19