VTech CM18045 Accessory Handset, Silver/Black | Requires a VTech CM184
IS8102 Accessory Handset for The IS8121-2, IS8121-3, or IS8121-4 Phone System. (Will NOT Work Without One of These 3 Phone Systems - Sold Separately) : Amazon.ca: Office Products
Vtech CS6509 DECT 6.0 Technology Extra Handset | Buy Stuff Store
VTech Accessory Handset (SN5107) | staples.ca
Vtech VT-DS6101 2-Line Accessory Handset For Ds6151 | Walmart Canada
VTech CM18045 Corded Accessory Handset | The Source