The 212iLW keypad has a chrome plated metal trim with hardened backlit keys. There are LED’s shown through the face plate to indicate operation status and provide the user confirmation of PIN number entry. Designed for indoor or outdoor use, the iLW keypad mounts to any standard single-gang electrical back box and provides superior durability. Operating voltage: 10-30 VDC; 12-24 VAC auto-adjusting Dimensions: 3.47″ W x 5.14″ H x .71″ D Temperature tolerance: -20F to 130F Order number: 0-230722 Features 120 users Single-gang flush mount design Hardened backlit keys Heavy chrome plated trim ring Key press feedback via sounder and yellow LED Built-in assignable sounder Bi-color Red/Green LED indicates relay status Indoor/outdoor use Keypad Programmable Functionality mode: 212, 242 Product information provided by linear-solutions.com Manual