usb numeric keypad - 3 * 4 Matrix rugged USB Numeric IP65 Waterproof panel mount brushed Metal Keypad with 12 full travel keys for indoor and outdoor (Star and Pound RS232 interface):
Wired Mechanical Numeric Keypad Plug and Play Waterproof RGB Backlit USB Silent Portable Number Pad for Home Travel PC Desktop Laptop Violet - Walmart.com
Amazon.com: Numeric Keypad, 35-Keys Portable USB Wireless Numeric Keypad Rechargeable Ultra-Silent External Numeric Pad for MacBook/MacBook Pro/Air and Windows Laptop : Electronics
metal matrix keypad, metal matrix keypad Suppliers and Manufacturers at Alibaba.com
20 Key Ip65 Waterproof Industrial Kiosk Rugged Stainless Steel Usb Metal Numeric Keypad D-8210 - Keyboards - AliExpress
16 Keys Type Water Resistant Keyboard , Outdoor Keyboard For Charging Post
metal matrix keypad, metal matrix keypad Suppliers and Manufacturers at Alibaba.com
Backlit keyboard - KY-PC-F2-LED - Shenzhen KEYU Co., Ltd - panel-mount / with mechanical keys / with 2 mouse keys
Wired Mechanical Numeric Keypad Plug and Play Waterproof RGB Backlit USB Silent Portable Number Pad for Home Travel PC Desktop Laptop Violet - Walmart.com