Point of Sale
The point of sale (POS)or point of purchase (POP) is the time and place where a retail transaction is completed. At the point of sale, the merchant calculates the amount owed by the customer, indicates that amount, may prepare an invoice for the customer (which may be a cash register printout), and indicates the options for the customer to make payment. It is also the point at which a customer makes a payment to the merchant in exchange for goods or after provision of a service. After receiving payment, the merchant may issue a receipt for the transaction, which is usually printed but is increasingly being dispensed with or sent electronically.
A security alarm is a system designed to detect intrusion – unauthorized entry – into a building or other area. Security alarms are used in residential, commercial, industrial, and military properties for protection against theft or property damage, as well as personal protection against intruders. Security alarms in residential areas show a correlation with decreased theft. Car alarms likewise help protect vehicles and their contents.Prisons also use security systems for control of inmates. Some alarm systems serve a single purpose of burglary protection; combination systems provide both fire and intrusion protection.
A Battery backup system is a silent electronic system that charges batteries, monitors the power supply and switches to battery backup within 20 milliseconds (0.02s) of the power going off. Modern lights, computers and the TV etc. will be unaffected by the switch over. When the power restores, the system waits a few seconds and then switches back to the grid power. You are therefore totally unaware of the system’s operation.
The money detector is a device that determines whether notes or coins are genuine or counterfeit These devices are used in many automated machines found in retail kiosks, self checkout machines, arcade gaming machines, payphones, launderette washing machines, car park ticket machines,automatic fare collection machines, railway station ticket machines, and vending machines.