Basically, it's a device that counts number of items present in its container by 'weight sensing using load cell wired to an amplifier. According to a 'pre-set' condition of items count in the code (Reorder level), an action is triggered (Buzzer and/or LED). User can input single item weight via Bluetooth and total weight and items count are displayed on an LCD. Besides, items count and a specific message upon inventory level are shown in serial monitor or RX channel in Bluetooth terminal app and/or Serial monitor as well to notify user with inventory status and to remind him/her to replenish stock if needed.