The SHL20 is a service and control device for ChipCoins® and transponder cards in a convenient design.

The hardware equipment comprises:

• Graphic LCD display for up to three lines or special characters (prompting by means of symbols)
• Battery or accumulator operation with commercially available AA batteries/accumulators
• Integrated recharging function for accumulator operation
• Software download interface for easy installation of software extensions
• Integrated real-time clock

The software equipment comprises:

• Four-key operator prompting with dynamic indication of the key assignment on the display
• Automatic shutdown after an adjustable period of time
• Simple article sales possible without on-line connection (e.g. massage, etc.)
• All bather data relevant to the settlement can be displayed
• Statistical counting of all article sales carried out
• Integrated algorithms against misuse
• Test function for ChipCoins® and transponder cards
• Service functions (setting the clock, contrast, article maintenance) password-protected
• Indication of battery capacity by means of symbols (battery-low)