Core contents of the standard: First, system functional requirements, clarifying that the elevator video intercom system must have six core functions: two-way voice intercom, video monitoring, one-key alarm, emergency call, audio and video recording, and remote unlocking, supporting linkage with property monitoring center, fire control room, and emergency rescue platform; Second, performance index specification, voice call delay ≤150ms, video definition not less than 720P, can clearly identify personnel facial features in night vision environment, emergency call response time ≤3 seconds, backup power supply lasts no less than 4 hours after power failure; Third, environmental adaptability requirements, the system must adapt to the strong electromagnetic interference, vibration, high and low temperature environment in the elevator shaft, working temperature range -10℃~55℃, anti-vibration performance complies with GB/T 2423 standard; Fourth, unified test method, clarifying the methods and judgment standards of system function test, performance test, environmental adaptability test, and electromagnetic compatibility test to ensure the consistency of product performance; Fifth, installation and acceptance specification, unifying the installation position, wiring requirements, commissioning process, and acceptance standard of the elevator video intercom system. The intercom host in the car must be installed in an easy-to-operate and unobstructed position, and the emergency call button must have obvious marks.