Check the listing for details. Touch Switch with Alarm Door Knob Project DIY kit 9VDC [ Assembled kit ]. Condition: New. Listed at 14.38 USD. [FA507] Touch Switch with Alarm Door Knob Project DIY kit 9VDC[ Assembled KIT ]**** FREE SHIPPING **** It is a small alarm circuit for anti-intrusion. Most of its utilisation is to hang its wire loop (acting as a sensor) to the door knob. This kit can be modified for other purposes as well. Technical data - Power supply : 9VDC. - Electric current consumption : 50 mA. (working load) - IC board dimension : 2.60 in x 1.90 in. Note: This listing is for completed board as shown in the photo !!!Recommended!!!Project Box that suitable for this kit is FB03. Payment MethodWe accept payment through PayPal only, this is easy and the most preferred way.Please kindly make a payment within 3 days after you won this item. Shipping & Handling MethodWe ship to WORLDWIDE.The item will be shipped within 3 business days after payment received.The item will be shipped via NON-REGISTERED AIRMAIL WORLDWIDE. (It doesn't have tracking number)If you need TRACKING NUMBER, you can send additional cost 2.5 US to us via Paypal so, I will shipped via REGISTERED AIRMAIL WORLDWIDE.Please let us know if you prefer Expedite shipping, extra shipping cost is required.You will receive the item within 1-4 weeks depend on your location. Sometime it can take up to 4-6 weeks in rare case. Return policyAll returns accepted.Your buyer should contact you within 14 Days after receiving the item.Refund given as Money Back.Return shipping will be paid by your buyer. Thanks for your visiting!If you have any problem, please contact me before leave me negative feedback.