When you replace the empty refill, you get fresh product and fresh energy in one simple step. Back-up power inside the dispenser provides added assurance of high performance, even with extreme high-frequency use. Optional communication modules add capability for service alerts and compliance monitoring. Spa-like foam soap refills can be seen through front and side windows. Sanitary sealed refills help reduce contamination. No batteries to change. LOCK OR NOT™ technology, can convert to a locking system.