I googled 'Peers attendance allowance' and found this:
Financial support for members explained
Most members do not receive a salary for their parliamentary duties but are eligible to receive allowances and, within certain limits, the travel expenses they incur in fulfilling their parliamentary duties.
Members who are not paid a salary may claim a flat rate attendance allowance of £150 or £300 for each sitting day they attend the House. This daily allowance replaces the separate overnight subsistence, day subsistence and office costs in the previous system. Entitlement is determined by attendance, not residence criteria.
Members who receive a ministerial or office holders' salary are not entitled to claim the allowances based on attendance.
Peers have been recorded signing on for the allowance and leaving immediately (just like Glenys Kinnock did at the EU). But don't forget -we are all in it together!