@fsoelch fixed by adding:
{
zigbeeModel: ['LXN-2S27LX1.0'],
model: 'JZ-ZB-002',
vendor: '3A Smart Home',
description: 'Intelligent Curtain Shutter Switch to Upgrade Normal Blinds',
extend: extend.switch(),
exposes: [e.switch().withEndpoint('button_aus'), e.switch().withEndpoint('button_ein')],
endpoint: (device) => {
return {'button_aus': 2, 'button_ein': 1};
},
meta: {multiEndpoint: true},
configure: async (device, coordinatorEndpoint, logger) => {
await reporting.bind(device.getEndpoint(1), coordinatorEndpoint, ['genOnOff']);
await reporting.bind(device.getEndpoint(2), coordinatorEndpoint, ['genOnOff']);
},
},
to /opt/iobroker/node_modules/zigbee-herdsman-converters/devices/smart_home_pty.js
I know, the Model is wrong, but the delivered picture looks similar 
