In Stock- "Usually Ships Same Day" Free Shipping to the US (2-3) Day and Canada (10-12 Days). Fed Ex Overnight and 2 Day Available at Checkout.


NOTE: For Quantity Discounts click the "Discount Drop Box".

This is the SCREW DOWN type Pre-Calibrated sensor module: 2008 and later models of the AL-3500- AL-3100 ONLY! 

Sensor life usually between 200-300 tests. Simply change the sensor just like changing a battery! Installs in seconds, just snap out and snap in!