ZooMed Zoo Med ReptiCare Day & Night Timer Providing a regular day/night cycle is important for your reptile's psychological wellbeing and plays a role in the proper regulation of hormones. The Zoo Med ReptiCare Terrarium Timer makes scheduling your reptile's day/night cycle a snap with a 24-hour programmable analog timer and two grounded outlets. Plus, you’ll never have to worry again about your reptile’s lights when you’re out of town. Providing a regular day/night cycle is important for your reptile's psychological wellbeing and plays a role in the proper regulation of hormones. The Zoo Med ReptiCare Terrarium Timer makes scheduling your reptile's day/night cycle a snap with a 24-hour programmable analog timer and two grounded outlets. Plus, you’ll never have to worry again about your reptile’s lights when you’re out of town. Providing a regular day/night cycle is important for your reptile's psychological wellbeing and plays a role in the proper regulation of hormones. The Zoo Med ReptiCare Terrarium Timer makes scheduling your reptile's day/night cycle a snap with a 24-hour programmable analog timer and two grounded outlets. Plus, you’ll never have to worry again about your reptile’s lights when you’re out of town.