If you don't get any other offers, DFWMAS has free par meter loaner program. @Drex has been making his way thru list now that COVID restrictions eased.
If you aren't Premium Member, then you might not be able to see below thread, but there is a whole section under Forum Premium Members related to the club's Par Meter Loaner program and its details. If you are a free member wanting to upgrade to perks of Premium, go here: https://www.dfwmas.org/membership/
Here is Par Meter Checkout signup thread:
https://www.dfwmas.org/community/advanced-reef-keeping/updated-par-meter-checkout-thread/#post-338094