All components necessary to support the ATA663203, the ATA663231/54, the ATA663232/55, the ATA663331/54 and the ATA663431/54 ? All pins easily accessible ? Choice of master or slave operation (D2 and R2 mounted per default for master operation) ? Switching into normal, silent or sleep mode via two jumpers ? LEDs for operation indication ? Ground coulter clip for easy probe connection while measuring with oscilloscope ? Easily adaptable watchdog times by replacing a single resistor ? Push buttons included for creating a local wake-up from sleep or silent mode