The main market price (including materials + labour) for the installation of the anti-piracy door for ultra-c lock cores is between $200 and $500, of which the lock core itself is worth about $150-400 and the individual manual installation costs about $50-150。
I. Summary of replacement costs for super-c lock cores
The cost component consists mainly of three components: the cost of lock core materials ($150-400), the cost of door-to-door services ($30-100) and the cost of installation debugging ($30-80)。
Ii. Lock core grade versus price correspondence
The lock core class directly determines the ability and price to prevent theft, with the current national standard (ga/t 73-2015) divided into three levels:
Class a lock core 30-80, one minute protection technology, one word or cross line, not recommended for entry. The door
Level b lock core: $80-200, anti-tech start-up time of 5 minutes, double-banded moon teeth key, for transitional use
Level c/superc lock core: $150-400, anti-tech start-up time of 270 minutes, leafy snake key, home preference
Common brands of super-c lock cores, such as maste, gold dot atoms, power, etc., are usually priced at over $200, with materials dominated by full copper or stainless steel, more secure for use and after sale。

Iii. Change your vs. I'll ask your master for a comparison
It is not difficult to replace a super-c lock core by itself, and many users will be able to do so within 20 minutes, but there is also a risk to know。
Advantages for self-replacement: - lowest cost, 30-80 dollars for net-order c lock cores -- simple operation, one screwdriver -- plenty of video tutorials for reference
Risk of self-replacement: - unable to install the wrong model (required to measure the length of the lock core 40-120 mm, directional plate size in advance) - uncertainty about the suitability of special brand doors (e. G., power, hope) - mishandling may damage the door or lock
Professions for masters: - professional measurement matching, fit-out -- construction done quickly, 30 minutes to complete -- provision of quality assurance, free maintenance for non-anthropogenic failure
The risk of hiring a teacher: - facing low prices, forcing price increases after going to the door - could be marketed for high prices and not lock cores
Iv. Guidelines for surveying throughs: prevention of investigation
There are a number of consumption traps in the lock core industry, and the following points help you avoid getting caught:
In advance, ask the master how much the total price was “all fixed together” before coming to the door, and confirm whether it included door-to-door fees, lock-tip fees, installation fees, night price increases, etc。

Keep an eye on the advertising of a low-priced turnkey sign price of “$26” “$80” for lock cores, which is often added to $1,300-2000 on the grounds that “the lock core does not match” “needs to be broken”。
3. The master of the formal lock-opener, who will verify his qualifications, shall, on his own initiative, present a public security certificate, identification card, work card and, in the case of non-qualified mobile workers, the area of serious damage。
4. Buy your own lock core and install it if you do not want to do it yourself but do not trust it with the master, you can purchase the c-class lock core (50-100 yuan) online, and find another master to install it (50-100 yuan for installation) at a total cost of less than $200, approximately $300 for the entire package。
5. Requiring receipts after the installation of payment vouchers and quality assurances, specifying the duration of the lock-in of the core (two to three years from the regular vendor) and maintaining the problem vouchers free of charge。
V. Situations recommending to return the hour
The following scenes suggest that super-c lock cores should be replaced as soon as possible to improve household safety: - new movers or renters are not able to confirm whether the old key was fabricated - the key was lost or inserted outside the door unearthed - the retrofit keys may be copied by workers after renovation - the lock core has been in use for more than five years, the cartons appear, the key is unplugged - the key hole has been pryed or the alien is blocked - the a-class lock core is still in use (one word key) and the anti-piracy performance is excellent. Bad
Summary of recommended programmes
Different needs scenarios suggest the following options:
The highest value for money: purchase of c-class lock cores on your own net (about $50) + self-installation at a total cost of about $50
The compromise option: buy a c-class lock core (about $50) + ask the master to install it (about $50) at a total cost of about $100

Save your choice: find a full locksmith during the day at a total cost of $250-400 and confirm the price by telephone
Emergency: 24-hour lock-up company directly linked to public security file, advance price increases at night clear
Used to rent a house and change the lock core. Friends laughed
# ten little steps to teach you how to switch locks? Listen
That's how the spirit changed the lock on his rental room
The art industry has a special field, and the lock opens the door
# 25 bucks for the lock #
If you open the lock, you'll have to look at the kopp + spec shop. Seagate
1. Previously rented a house with a lock core of 120. Friends laughed








