GTX-GN-503F Please log in to see price or purchase this item Quantity discounts available QuantityPrice SKU: GTX-GN-503F MANUFACTURER: Gentex Product Details Single/Multiple Station Smoke/Carbon Monoxide Alarm, Universal Mount, Temporal 3 and Temporal 4 Audible Signal, Form A/C Relay Contacts Product Details Back Product DetailsSingle/Multiple Station Smoke/Carbon Monoxide Alarm, Universal Mount, Temporal 3 and Temporal 4 Audible Signal, Form A/C Relay Contacts