Isonas PAC-21-50-3Y 

https://www.imotion.live/shop/pac-21-50-3y-isonas-pac-21-50-3y-10929 https://www.imotion.live/web/image/product.template/10929/image_1920?unique=eab86fa

Pure Access Cloud, 21 to 50 door license, basic access control