UL 104

These requirements cover the following elevator appliances intended for installation and operation in accordance with the requirements of the Safety Code for Elevators and Escalators, ASME A17.1-1996:

• Hoistway-Door Interlocks,
• Hoistway-Door Combination Mechanical Lock and Electrical Contacts, and
• Hoistway-Door and Car-Door or Gate Electrical Contacts.

These requirements are intended to supplement and be used in conjunction with the Safety Code for Elevators and Escalators, ASME A17.1-1996.

These requirements do not cover elevator appliances rated more than 600 volts.

A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of fire, electric shock, or injury to persons shall be evaluated using the appropriate additional component and end-product requirements as determined necessary to maintain the acceptable level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this standard cannot be judged to comply with this standard. Where considered appropriate, revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard.