https://support.revvitysignals.com/hc/en-us/community/posts/35896146833556-%EF%BC%B2%EF%BD%8F%EF%BD%82%EF%BD%89%EF%BD%8E%EF%BD%88%EF%BD%8F%EF%BD%8F%EF%BD%84-customer-service-telephone-number-Call-Talk-Now