The 1640 is 16.5 Volt AC, 40, VA Class 2 transformer. Used to power the Subscriber and recharge backup battery. For legacy and 2.0 subscribers.Please note that standard shipping rates and promotions do not apply to orders shipping to Alaska, Hawaii, Puerto Rico, the U.S. Virgin Islands, and Guam.
Buyers are fully responsible for all additional shipping fees, surcharges, or duties required to deliver to these regions. To ensure a smooth transaction and prevent unexpected charges, please contact our customer service team to request a comprehensive shipping quote before placing your order. Orders placed from these locations without a prior quote may be subject to review or cancellation