Product description
The AFT-BG-34 emergency telephone is compatible with program-controlled telephone exchanges of many brands on the market. It is an emergency telephone specially designed for van elevators, clean rooms of pharmaceutical factories, dust-free workshops and other places. This phone has one key Features such as automatic alarm, one-key cycle dialing, and one-key automatic intercom. It is a necessary communication device for elevator emergency help, and it is also a convenient communication device for clean room intercom.

Features
1. 304 stainless steel material, fine-grained surface treatment, with the characteristics of waterproof, dustproof, moisture-proof, anti-corrosion, and anti-violent percussion;
2. The emergency button is a self-resetting light-emitting button produced by the most professional manufacturer in China. It is made of 304 stainless steel and has the characteristics of waterproof, moisture-proof and dust-proof;
3. The main board of the phone adopts foreign-imported single-chip microcomputer to cooperate with the company's self-grinding chip development. All components adopt SMT chip technology, which has rich functions and high integration. It also reserves two dry node interfaces with one open and one disconnect to enhance the connection with external equipment. Linkage
4. The overall protection level of the phone is: IP54, and a rain cover is required for outdoor installation.

Phone function introduction (due to the high integration of the motherboard, please confirm the specific functions before leaving the factory)
1. Emergency alarm: After pressing the hands-free button, the phone will automatically dial the emergency alarm telephone number, such as: 110;
2. Cyclic dialing: After pressing the hands-free button, the first group of numbers will be automatically dialed. If the line is busy or there is no answer, then it will go to the second group. When the last group is still busy or there is no answer, it will automatically switch back. The first group, until someone answers or hangs up actively;
3. Auto hang up: After the call is over, the phone will automatically detect the busy tone signal and inverse limit signal of the switch, and hang up after several confirmations;
4. Linkage function: This phone reserves two open nodes, one open and one open. When the phone is off-hook/hangs up, the two dry nodes respectively provide two sets of pulse switch signals, one open and one off;
5. LOGO customization: LOGO logo and operating instructions can be customized according to requirements;
6. Support the customization of external dimensions and color customization.

Specific parameters

Schematic

Installation diagram

a. After unpacking, use a screwdriver to unscrew the phone;
b. According to the installation hole position of the bottom shell, drill 4 Φ6 holes on the wall, and insert rubber plugs (if it is an elevator, drill 4 M4 holes on the car wall and tap);
c. Use the matching self-tapping screws and gaskets to fix the telephone base plate on the rubber plug (or use M4 screws and gaskets to fix the telephone base plate on the car wall);
d. Connect the telephone line, find the matching setting button, and connect it to the motherboard;
e. Fix the phone with a screwdriver.

Product packaging specifications
1. Emergency phone for help, 1 piece
2. Power adapter, 1 piece
3. Set button, 1 (if there are multiple phones purchased in the same batch, the buttons will be matched appropriately)
4. Telephone line, 2 cores 1.5 meters, 1
5. Factory number and product certificate: affixed to the back panel of the phone
6. Warranty card, 1 copy; product manual, 1 copy