Search found 88 matches

by Jim
Sun Jan 10, 2021 1:56 pm
Forum: Home security system troubles
Topic: Avoid wireless transmission interference
Replies: 0
Views: 3134

Avoid wireless transmission interference

Wireless communication devices are widely used in our daily life. Wireless security systems such as wireless surveillance equipment, wireless alarm system, wireless perimeter security equipment are popular nowadays. But at outdoor environment, various interference will greatly affect the wireless de...
by Jim
Sun Jan 10, 2021 1:47 pm
Forum: Commercial and Industry Security
Topic: Installing outdoor security cameras notice
Replies: 0
Views: 3290

Installing outdoor security cameras notice

CCTV surveillance system can be used for purpose of monitor, detection, observe, recognition, identify and inspection. Many homes are with CCTV cameras installed in house. Also many homes are considering installing CCTV cameras outside house to increase home security protection or other purpose. The...
by Jim
Thu Jan 07, 2021 12:41 pm
Forum: Commercial and Industry Security
Topic: Anti-theft smoke device used for base station security
Replies: 3
Views: 2866

Will the anti-theft smoke cause fire?

Will the anti-theft smoke cause fire?
by Jim
Tue Jan 05, 2021 1:49 pm
Forum: General discussion of security protection
Topic: The safety of smart home products
Replies: 0
Views: 5737

The safety of smart home products

Smart home products are rapidly developing and entering people's homes.But people are also worried about the safety of smart homes. People fear that their private cars and home security cameras could be hacked. The AmazonECHo, a smart speaker, a smart bracelet, and a smart refrigerator are all vulne...
by Jim
Tue Jan 05, 2021 1:15 pm
Forum: Home Security Solutions
Topic: What should I ask when shopping a smart lock
Replies: 1
Views: 2423

What should I ask when shopping a smart lock

When shopping a smart lock, you should ask questions below: 1. Is the password saved in the door lock or the cloud? The security of smart locks is our first consideration. The door password of the smart lock can be saved on the door lock or stored in the cloud.There are risks in keeping your door pa...
by Jim
Sun Jan 03, 2021 12:41 pm
Forum: Home Security Solutions
Topic: Question of security alarm system
Replies: 3
Views: 4127

How to choose fire detectors

Q: How to choose fire detectors A: 1. Smoke detector should be selected for places with smouldering stage in the early stage of fire, producing a large amount of smoke and a small amount of heat and little or no flame radiation. 2. Heat detectors, smoke detector , flame detectors or a combination th...
by Jim
Sun Jan 03, 2021 12:31 pm
Forum: Home Security Solutions
Topic: Question of security alarm system
Replies: 3
Views: 4127

Re: Question of security alarm system

Q3: How do I choose to install color or black/white surveillance cameras? A: 1. Color camera is suitable to be installed in strong light, colorful occasions, such as the street and other occasions used for monitoring. 2. Black and white surveillance cameras are suitable for installation in corridors...
by Jim
Sun Jan 03, 2021 12:08 pm
Forum: Home Security Solutions
Topic: Question of security alarm system
Replies: 3
Views: 4127

Question of security alarm system

Q1: What are the main functions of intrusion detection and alarm controller? A: 1. Supply power to front-end alarm detectors 2. Receive the alarm signal from the alarm detector 3. Analyze and judge the received electrical alarm signals for further processing 4. Start the alarm device such as alarm l...
by Jim
Sun Dec 20, 2020 2:50 pm
Forum: Ask Your Question
Topic: Does it matter if the smoke detector's four-wire (power and signal wires) touched?
Replies: 4
Views: 3985

How to test smoke detector with multimeter?

Smoke detectors prevent fires by detecting the concentration of smoke.The commonly used smoke detectors are ionic type and photoelectric type. Under normal circumstances, the smoke detector will check itself every once in a while, and the indicator light will flash with an interval of about 4-5 seco...
by Jim
Tue Dec 15, 2020 2:25 pm
Forum: Ask Your Question
Topic: Does it matter if the smoke detector's four-wire (power and signal wires) touched?
Replies: 4
Views: 3985

Does it matter if the smoke detector's four-wire (power and signal wires) touched?

Question: The four wires of GND, NO NC 12V touched each other when they were disassembled, and the display light did not turn on after they were connected. What is wrong? Answer: 1. This should be a security linkage smoke detector with alarm output. 2. The 12V and GND marked by the detector are the ...