" is not actually a product model number, but rather a factory postcode (Drachten, Netherlands) often printed on the handles of Philips personal care devices like shavers, trimmers, and baby monitors.
For PWM dimming, refer to page 10 of the manual. philips nl9206ad4 manual
Most require a 15V HQ8505 adapter. Do not use generic 5V USB chargers unless specified. Rinse the head under warm water after every use. Replace blades/shaving heads every 4–12 months depending on the model. Battery Care: " is not actually a product model number,
Before searching for a manual, you need to find the specific product code. Look near the NL9206AD-4 mark for a code like: Avent Products : SCD730, SCD731, or SCF413. Grooming/Shavers : S7788, QP2620, or BT7200. Kitchen/Home : HD series (for Airfryers) or HR series (for mixers). Common Products with the NL9206AD-4 Mark 1. Philips Avent Soothers and Sterilizers Many parents find this code on the Avent soother carrying cases that double as microwave sterilizers. Display: 49" (124 cm) 4K UHD LED-LCD display