Check the listing for details. DSC PTD1640U Energy Efficiency Plug-in Transformer. Condition: New. Listed at 25.99 USD. DSC PTD1640U Energy Efficiency Plug-in Transformer Advanced Security LLC offers UL Alarm Monitoring Services starting at $15.00 per month or DIY Self-Monitoring Services starting at $10.00 per month, NO Contracts, NO Hidden Fees, & NO Activations Fees. Message or visit our website We are an Authorized Alarm DC, Honeywell Home, Resideo, AlarmNet, Ecolink, DSC, Telguard, SecureNet, Uplink, Alula & 2GIG Security Dealer. We only sell Genuine Products, from authorized distributors . Not closeouts or old stock. The DSC PTD1640U is a transformer that works with the DSC PowerSeries NEO and Honeywell VISTA Security Panels. It has specifications of 16.5VAC, 40VA Main Features 16.5V Output 120 VAC Input 40VA Internal Non-Resettable Fuse 120V AC Plug with Wall Plate Retainer Screw Two Terminal Output Click here for more DSC Products 820043000924