Material: Stainless SteelPower: AAA Battery ( Not Included)Panel Size: 10.0*4.1*2.5cm/3.9*1.6*1.0inLock Size: 12.5*6.5*2.0cm /4.9*2.6*0.8inPacakge Weight:193g/6.8ozMade of stainless steel, sturdy, precise, safe and durable. Suitable scope is broad, applicable to agent, school, SPA / sauna bath center, swimming pool, gymnasium, golf course, supermarket, hotel, company, factory, household, business clue, etc. Packge List:1 * Lock ( Battery Not Included)1 * Password Panel1 * Installation Kit1 * User Manual Notes:Due to manual measurement, there may be deviation1-3cm.Due to photograph light or other reasons, the item in picture and material object may have slight difference, please in kind prevail.(Convenient to control),Through APP, you could check the unlocking records,also you can share the temporary code/to visitors, nannies, house keepers, tenants, guests, etc.