Check the listing for details. TrolMaster CO2 PPM Controller (Beta-8). Condition: New. Listed at 245.00 USD. TrolMaster CO2 PPM Controller (Beta-8) MAIN FEATURESThe BETA-8 CO2 controller offers a precision CO2 NDIR sensor / controller in an affordable easy-to-use package. The BETA-8 features a high-quality remote CO2 sensor (with 16ft cable) and built-in photocell to automatically activate your supplemental CO2 system to maintain CO2 PPM levels only during daylight hours. The BETA-8 also has adjustable deadband and min-max recall. It also has a ‘fuzzy-logic’ feature which will more accurately control compressed CO2 systems.The CO2 sensor can be easily re-calibrated and will continue to operate accurately for many years. DETAILS AND SPECIFICATIONS HandlingWe will ship all orders within 1-2 business days of payment.Shipping SHIPPING IS FAST AND FREE. We ship to the lower 48 states only. We try to ship most items within 24 hours of payment Monday-Friday. Most orders are in transit for two days but some may take longer. If you have a specific time frame, please contact us before you make the purchase.DISCREET SHIPPING. All our items are shipped in either USPS or UPS packages with no brands or pictures on the box and will not say Hydro4Less on it. Our larger items are always black wrapped.Return PolicyWe do not accept returns. Please be sure this is the item you want before making your purchase.If the item has arrived damaged, we will always send you a full refund or replacement. If you have any questions, please contact us through ?Ask seller a question? link. We will respond within 1 business day or less.FeedbackWe take our reputation seriously. We buy and sell online, so we understand the value of trust. If you are unsatisfied with your order, we would love to work with you to resolve it to your satisfaction.Our office hours are 9AM - 5PM PST Monday-Friday.As long as you are happy with your purchase, please leave a POSITIVE feedback! Thank You for Shopping With Us!