Schneider Electric Harmony XB4R - Wireless Push Button Switch and Configurable Receiver Unit Set with 10 Colored Caps, Metal, 24…240V AC/DC, 22mm Mount, XB4RFA02 : Amazon.co.uk: Business, Industry & Science
ZB4RTA6 - Wireless and batteryless transmitter, Harmony XB5R, push button, metal, blue, 22mm, spring return | Schneider Electric USA
Wireless Push Button Switch For Automatic Door Activation | Sanway Technology
WIRELESS PUSH BUTTON, INDUSTRIAL QUALITY INCLUDING TRANSMITTER AND BATTERIES"