CCA-H4025 Features 24 VAC input, remote flame sense, diagnostic LED indicator, ignition trial as required, automatic one hour reset, custom pre-purge and inter-purge times, external flame sense test pins. Application The CCA-H0425 microprocessor based hot surface ignition control is designed for use with a variety of gas flame heating applications such as; pool and spa heaters furnaces, water heaters, infrared heaters, commercial and industrial appliances. Agency Certifications: ETL, approved to ANSI Z21.20-2000 and CSA-C.22.2 No.199-M89. Enclosure, Mounting and Size: With case and cover: 5.7" x 3.97" x 2.08" Uncovered with standoffs: 5.55" x 3.78" x 2.08"