Description

Elevator car intercom with built-in auxiliary TD-20 Brief Introduction

Product Name	Elevator car intercom with built-in auxiliary
Model Number	Z TD-20
Quality	Original.Brand New
Payment	T/T. Paypal. Western Union
Delivery	3-5 Working Days
Packaging	Packed by carton

Elevator Car Intercom with Built-in Auxiliary TD-20: Reliable Emergency Communication from Nanjing Zhuye Elevatorparts

Elevator Car Intercom with Built-in Auxiliary TD-20 is a critical emergency communication component for elevator systems, integrated with built-in auxiliary functions (including emergency power supply, noise reduction, and fault self-diagnosis) to ensure seamless communication between elevator passengers and the monitoring center. Installed inside the elevator car (usually on the car control panel or wall), this intercom serves as a lifeline in emergencies such as elevator breakdowns or power outages: it automatically switches to the built-in emergency power supply (supporting 24-hour continuous operation) and enables passengers to initiate one-touch calls to the monitoring center, while the noise reduction function ensures clear voice transmission in noisy environments. Widely compatible with mainstream elevator intercom systems and applicable to residential buildings, commercial complexes, office towers, airports, and industrial elevators, it is an indispensable safety component for elevator emergency response. Exclusively supplied by Nanjing Zhuye Elevatorparts, a professional provider of high-quality elevator safety and communication components, the Elevator Car Intercom with Built-in Auxiliary TD-20 fully complies with international elevator safety standards (EN 81-20, GB 7588) and communication equipment technical specifications (IEC 60950). Manufactured with premium electronic components and precision assembly technology, it features stable communication performance, strong anti-interference ability, and reliable operation in harsh shaft environments, earning recognition from global elevator maintenance teams and property management companies.

Nanjing Zhuye Elevatorparts adheres to the core philosophy of “Uninterrupted Communication, Timely Rescue” and implements rigorous quality control for the TD-20 elevator car intercom with built-in auxiliary functions. Each unit undergoes multi-stage pre-delivery inspections, including communication clarity testing, auxiliary function verification, emergency power supply performance detection, and service life evaluation. The intercom adopts advanced materials and technologies: the main control board uses high-performance microchips to realize fast call connection (connection time ≤ 3 seconds); the built-in emergency battery (lithium-ion, 12V/2Ah) supports 24-hour continuous operation after power outage; the microphone and speaker are equipped with noise-canceling technology, reducing ambient noise by ≥ 30dB to ensure clear voice transmission; the shell is made of flame-retardant engineering plastic (UL94 V0 grade) with IP54 protection rating, effectively resisting humidity, dust, and slight mechanical impact in the elevator car (-20℃ to 60℃); the one-touch call button is designed with anti-sticking structure, ensuring reliable operation even after long-term use. The standardized wiring interface and mounting hole design enable seamless matching with elevator car structures and monitoring systems, simplifying installation and replacement processes.

Step-by-Step Usage Guide for Elevator Car Intercom with Built-in Auxiliary TD-20

To maximize the communication reliability, service life, and operational stability of the Elevator Car Intercom with Built-in Auxiliary TD-20, strictly follow the professional guidelines provided by Nanjing Zhuye Elevatorparts for selection, installation, and use:

1. Professional Selection & Pre-Installation Preparation

Installation must be performed by certified elevator technicians or professional communication equipment installers. Prior to selection, refer to the elevator’s intercom system model, monitoring center equipment parameters, and car structure dimensions (consult Nanjing Zhuye Elevatorparts’ technical team if necessary) to ensure the TD-20 intercom is fully compatible. Preparation steps: Cut off the elevator’s main power supply and the power supply of the intercom system, and lock the power switch; place a “Maintenance in Progress” warning sign at the elevator entrance; clean the intercom mounting area in the car to remove dust, oil stains, and debris; check the wiring harness (provided by Nanjing Zhuye Elevatorparts) for completeness and damage.

2. Correct Installation & System Debugging

Intercom Fixing: Take the TD-20 intercom from Nanjing Zhuye Elevatorparts, align it with the preset mounting position in the car, and fix it with stainless steel bolts (torque: 15–25N·m). Ensure the intercom is installed firmly without shaking, and the call button is easily accessible to passengers.
Wiring Connection: According to the elevator’s intercom system schematic and Nanjing Zhuye Elevatorparts’ wiring manual, connect the intercom’s wiring harness to the elevator’s main communication line and power supply line. Distinguish between power lines (DC 12V/24V), communication lines (two-wire or four-wire), and auxiliary function lines (for fault self-diagnosis); ensure tight wiring, correct polarity, and use cable ties to fix the wire harness to avoid friction with car components during operation. Connect the built-in emergency battery to the main control board as per the instructions.
System Debugging: Restore the power supply of the intercom system and the elevator. Test the one-touch call function: press the emergency call button on the intercom, and confirm that the call is connected to the monitoring center within 3 seconds. Test the voice clarity: communicate with the monitoring center bidirectionally to ensure no noise, echo, or signal interruption. Test the built-in auxiliary functions: cut off the main power supply to verify that the intercom automatically switches to the emergency battery (the power indicator light should stay on); check the fault self-diagnosis function by simulating a wiring fault, and confirm that the monitoring center receives the fault alarm signal.

3. Daily Use & Routine Maintenance

Correct Usage for Passengers: In case of emergency, passengers only need to press the red emergency call button on the TD-20 intercom and hold it for 2 seconds until they hear a connection prompt. Speak clearly into the microphone (located near the call button) and wait for the monitoring center’s response; do not repeatedly press the button or knock the intercom.
Daily Inspection: Maintenance personnel should check the intercom during daily patrols: Observe the intercom’s shell for damage, corrosion, or loose mounting; check the power indicator light (normally green) and emergency power indicator light (normally off, on when using emergency power) for normal display; press the call button to test the call connection function (coordinate with the monitoring center in advance).
Regular Maintenance: Every 3 months, clean the intercom’s surface, call button, and microphone with a soft, dry cloth to remove dust and stains (avoid using water or corrosive cleaning agents). Every 6 months, test the built-in emergency battery’s performance: cut off the main power supply and check if the intercom can operate continuously for 24 hours; recharge the battery if its capacity is reduced by more than 30%. Every year, cooperate with the monitoring center to conduct a full-system communication test to ensure the intercom’s communication quality and auxiliary functions are normal.

Recommended Replacement Cycle for Elevator Car Intercom with Built-in Auxiliary TD-20

As a core emergency communication component enduring long-term electrical operation, environmental erosion (humidity, dust, temperature changes), and frequent button operation, the Elevator Car Intercom with Built-in Auxiliary TD-20 has a specified service life. Timely replacement is crucial to avoiding faults such as call connection failure, voice distortion, or emergency power supply failure—issues that may lead to loss of communication between trapped passengers and the monitoring center, delaying rescue and affecting passenger safety.

1. Standard Replacement Cycle

Under normal operating conditions (elevator daily operation time 12–24 hours, annual call times ≤ 100, car environment temperature -20℃ to 60℃, humidity 10%–85%), the recommended replacement cycle for the TD-20 elevator car intercom is 5–7 years. This cycle is determined based on Nanjing Zhuye Elevatorparts’ long-term field operation data, component aging tests, and global user feedback on elevator communication equipment.

2. Adjustments for Special Scenarios

High-Frequency Use & Harsh Environments: For elevators in high-traffic locations (e.g., large airports, central shopping malls) with frequent emergency calls (annual call times ≥ 500), or in harsh environments (e.g., high-humidity coastal areas, high-dust industrial sites), the replacement cycle is shortened to 3–4 years. Frequent use accelerates the wear of buttons and the aging of internal electronic components, while harsh environments cause shell corrosion and signal interference.
Low-Frequency Use & Stable Environments: For elevators with low usage frequency (e.g., villa elevators, small office buildings with daily operation time < 8 hours) and stable car environments (constant temperature and humidity), the replacement cycle can be extended to 7–8 years—only after Nanjing Zhuye Elevatorparts’ technicians inspect and confirm that the intercom’s communication quality, emergency power supply performance, and structural integrity meet factory standards.

3. Immediate Replacement Conditions

Replace the TD-20 elevator car intercom immediately if any of the following issues occur, regardless of its service life:

The one-touch call function fails, and the intercom cannot connect to the monitoring center even after maintenance and debugging.
The voice transmission is severely distorted, with obvious noise or echo that cannot be eliminated by the noise reduction function or maintenance.
The built-in emergency battery fails, and the intercom cannot switch to emergency power supply or operate continuously for 8 hours after power outage.
The intercom’s shell is severely corroded, cracked, or deformed, exposing internal electronic components; or the call button is stuck and cannot be reset, affecting normal use.

In conclusion, the Elevator Car Intercom with Built-in Auxiliary TD-20 from Nanjing Zhuye Elevatorparts is a high-quality, highly reliable emergency communication solution tailored for modern elevator systems. By following the correct selection, installation, maintenance, and replacement guidelines, elevator management and maintenance teams can effectively ensure the intercom’s reliable operation, provide a safe communication channel for passengers in emergencies, and improve the efficiency of emergency rescue. Choosing Nanjing Zhuye Elevatorparts means you get 100% authentic TD-20 intercoms, plus professional support—including model matching, on-site installation and debugging guidance, and prompt after-sales service. Trust Nanjing Zhuye Elevatorparts for the reliable emergency communication of your elevator system.

Products Categories