9 Apparatus for recording, transmission, processing, reproduction of voice, audio and video data, drawings, images and signals in connection with the installation, modernization, maintenance and repair of elevators, escalators and moving walkways and parts and components for such installations; apparatus for acquisition, reception, conversion, and output of voice, audio and video data, drawings, images and signals in connection with the installation, modernization, maintenance and repair of elevators, escalators and moving walkways and parts and components for such installations, namely, hand-held computers, smartphones, and converters; data processing apparatus; remote monitoring apparatus, namely, electric sensors, cameras, computers, LCD monitors, electronic displays in the nature of digital signage, electric signal buzzers, siren alarms, warning bells, light signals in the nature of luminous signs and stroboscopic electric warning lights, and loudspeakers to monitor the operation and functionality of the elevators, escalators and moving walkways; computers and tablet computers; computer software for use in the installation, monitoring and control of elevators, escalators, moving walkways, access control and alarm systems; application software for mobile phones, smart phones and tablet computers for use in the installation, monitoring and control of elevators, escalators, moving walkways, access control and alarm systems; mobile telephones; smartphones