新加坡采购需求：门铃、门铃摄像头、无线门铃、触摸屏显示器、触摸屏显示器、无线门铃摄像头

I'm interested in getting more details on your video intercom systems. Specifically, I'd like to know the pricing for your various models and if there are any bulk purchase discounts available. It would also be helpful to understand the features and specifications of each option, so I can make an informed decision. Additionally, if you could provide information on lead times for delivery and any available warranty or service agreements, that would be great. I'm looking forward to reviewing your offerings and exploring potential collaboration opportunities. Thanks for your assistance!