Models TVE13 thru TVE24 have been certified by ITS. This certification mark indicates that the product has been tested to and has met the minimum requirements of a widely recognized (consensus) U.S. products safety standard, that the manufacturing site has been audited, and that the applicant has agreed to a program of periodic factory follow-up inspections to verify continued performance.

Models TVE13 thru TVE24 are ETL Listed under report number 3100959CRT and comply with UL705 (electrical), and ULC-S645 Standards and CSA Std C22.2, No 113.