Dear buyer, Welcome to my shop, if you have any question please let me know, I will do my best to help you when received your mail(will reply within 48hours), thanks for your understand,if want many quantity or many items total please contact me,maybe will have a good price,Have a nice day! YLI is biggest lock factory in China,the lock high quality and working very stable ! YB-900 is an enhanced all-metal construction electric bolt.with European-type cylinder and key function,which has achieve the purpose of double use of electric control and manual control functions. The 304 stainless steel bolt , produced by CNC Lathe seiko, can withstand 2000kg holding force.The Professional and durable solenoid valve is qualified after 1 million times of ageing test. Rain-proof design satisfy the installation request of indoor and outdoor. Surface-mounted design surface-mounted design,easy to install ,stable and durable Suitable for double swing door Designed for 180double swing door, can be installed to the left or down. Durable electromagnetic valve Design The professional Durable electromagnetic valve Design,The service life more than 500000 times(the special design guarantee the use for 5-10 years) All-metal construction Lock body Enhanced metal construction ,the linkage parts use the strengthen Treatment Design,warranty the product more durable, more strong ,can be normally operated under the the temperature of heat or severe cold 304 Stainless steel solid core Bolt Integral stainless steel Solid material,produced by CNC Lathe seiko,can withstand 2000kg holding force.It’s different from the hollow lock bolt on market which after the processing of hollow tube plug with rubber and fall off easily under impact force or severe cold environment. Lock signal output option A standard set of NO/NC/COM lock signal output. Double use of electric control and manual control functions Special European-type cylinder design , In the daily able to use double function ,both entrance guard control “electronic control” and emergency use "manual" Customized various type of Lock cylinder The standard factory supporting is 35mm Unilateral key,the single cylinder or Double cylinder is optional Rain-proof Design Rain-proof design satisfy the installation request of indoor and outdoor. Product Parameter Parameter Description Feature Fail secure(Unlocked when energized) Lock Body 329.5Lx41Wx46H(mm) Bolt 29.5(length)*17.8(diameter)(mm) Voltage DC12V(DC24V need order) Start Current 5.0A Standby Current 0.6A Signal Output Lock signal(NO/NC/COM) Bolt strength 304 stainless steel, 2000kg holding force Installation Can be installed to the left or down Suitable For Steel gates; Heavy door Optional Power YP-904-5 Material 304 stainless steel Waterproof Level IP-55 Weight 1.8kg Packing included: YLI YB-900 Lock x1 Shipping: We Ship to Worldwide. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying. The item will be shipped out within 48 hours on the weekdays ( Monday to Friday ) or the next business days on the weekend after full payment must be received. Only ship to the Address. Please make sure your address in is Correct before you pay. we are not responsible for any wrong or undeliverable addresses. We will ship out the item by AirMail from China or Hong Kong Post Office. If want send by DHL UPS EMS or other Express shipping please contact me to change the shipping cost. We will send the item as " GIFT " It takes about 15-40 working days to arrive. Sometimes take a little longer , Due to Local dispatch or other reasons, It might goes more than 20 days . Payment We accept PayPal only. All major credit cards are accepted through our secure payment processor PayPal. Payment must be received within 10 days of auction closing. Refunds Returns If you do not satisfied with your purchase, or if it is damaged when receive, please let us know, we will do our best to help. If the problem cannot be solved, please return it to me in the condition it was received within 7 days. we will send you replacement or give you a refund. All returns should include all original items undamaged, in re-saleable condition, all original packaging including manuals, warranty forms. Buyers is responsible for the returning shipping cost. We care about our valued customers, and will always try to help you. So if you have any problems, please message us immediately. Please give us the opportunity to resolve any problem. We understand the concerns and frustrations you might have, and will try our best to resolve the issues.Please contact us BEFORE leaving any negative or neutral feedback or open any dispute on paypal.