A cash drawer trigger is a device that allows you to open cash drawer without connecting to a POS receipt printer, can be used independently with your POS application. Commonly, auto open of cash drawer is controlled by POS receipt printer. After a sales receipt is printed, the cash drawer will open automatically. But if user wants to open cash drawer without printing a receipt or without making a sale such as making a refund to customer, he/she can use a cash drawer trigger to fulfil the task. POS System runs on different operating system such as Windows and Android, different cash drawer trigger interfaces are created and made available to meet customers' demands.

Yes, you can use BUDDY Series AT10ME-PB Push Button Cash Drawer Trigger, both auto and manual opening of cash drawer are available.
You can have 2 options to open your cash drawer :
1) trigger open from your POS receipt printer after a sales transaction and printing a receipt OR
2) trigger open by a push button to open cash drawer manually for a NO Sale, without a sales transaction

Yes, you can use AT10B3-86201 UnLock Smart Bluetooth Cash Drawer Trigger to open cash drawer with the Android AcodeTrigger App via your mobile device (Android). It is easy to setup, just connect the Bluetooth Drawer Trigger to your own mobile device, install and complete settings of the AcodeTrigger App (Android). You can also setup a password to open cash drawer. The AcodeTrigger App is user friendly, the App does not involve with any other systems, it can operates as a standalone unit, be able to run independently, without EPOS.