When evaluating an electric strike lock, the surface should have a metallic shine with no visible scratches. The standby current is typically around 300 mA, and the operating current should be under 900 mA. After being powered on for a long time, the surface may feel slightly warm, but it shouldn’t be excessively hot. The locking force must be strong enough—when pressed, the lock should pop back quickly and firmly. It’s recommended to perform at least 4,000 on-off tests. If during this process the lock feels weak, doesn’t return properly, or fails to lift, it’s considered substandard. Some consultants ask whether the lock uses a two-wire or multi-wire system. Multi-wire electric locks are usually controlled by a microcontroller, which manages the operating current more efficiently. This helps prevent overheating and includes features like delay control and magnetic door detection. Delay control can help doors with weak springs, while magnetic door monitoring provides real-time status updates. Although these features may not always be necessary, the quality and stability of microcontroller-based locks are generally superior to those without. So, it’s better not to cut corners just to save a little money. Two-wire electric locks, on the other hand, have a simpler internal structure, relying only on an electromagnetic coil. They draw higher currents, generate more heat, and are prone to damage over time. These locks are not recommended due to their lower reliability and performance. Basic Purchase Tips for Electromagnetic Locks The appearance should be well-crafted, with no visible scratches or rust. The key factor in evaluating an electromagnetic lock is its tensile strength. This requires professional testing equipment, but after installation, you can test it by pulling suddenly. A slight pull is normal, but the lock body should be installed correctly. The magnet should not be too tight, as this could affect the tensile strength. Pre-Sales Considerations for Smart Door Locks Should you choose a domestic or imported electric lock? Imported models tend to be expensive, often costing over $1,000 each, and are rarely sold to end users. While they are technically mature and have low failure rates, service can be an issue. If something goes wrong, foreign companies may blame unstable power supply or other factors, making repairs difficult. I recommend going with a domestic model instead. They are more affordable, and many are produced or manufactured using Taiwan's processes, meeting similar quality standards. The difference in quality is minimal. Electric Lock vs. Magnetic Lock: Which One to Choose? The right type of lock depends on your specific needs. For double-opening glass doors, an electric strike lock is ideal. For single-opening wooden doors, an electromagnetic (magnetic) lock is better. Magnetic locks are also known as electromagnetic locks. They are mounted on the top of the door frame. Some people find them unattractive, but in many countries, they are commonly used alongside redundant electric locks. Magnetic locks are more stable than electric strike locks, though electric locks offer higher security. Electric locks are installed on the door side, often paired with mechanical locks like ball locks. They are less secure, harder to wire, and cheaper, but not recommended. For residential use, magnetic and electric locks are better choices. Electric locks can be noisy, while modern silent versions are available. However, no matter the type, waterproofing is essential, as iron components are prone to rust. There are other types of electric locks on the market, such as power-off locks, which keep the door closed during a power outage. However, they don’t meet fire safety standards and may fail inspections. They also require thicker door frames, leading to potential issues. It’s best to avoid them. Overall, choosing a reliable and widely-used lock is the safest option for most applications. cloth,Pure cotton cloth,Processing cloth Jiangmen Gude Polishing Equipment Co., Ltd , https://www.kokipolishing.com