
I love this keyboard and it's a great deal for just one keyboard! At first I was confused by the call button. It's just a contact closure, so pressing it shorts the white and gray wires (they're labeled + and - in the manual, which is confusing). In my custom Arduino system, I use the NC and C pins on the keypad relay for the disable indicator and handbell press. I also have a (backup) PIN in case someone doesn't have their key fob (they just enter that PIN, then the pound key to remove/activate the relay). I don't use push/open functions. All I did in programming was change the default system password, add FOBS and also add a user PIN. The procedure for performing these functions is detailed in the accompanying instructions. It is very rare to find a product with such functionality in this price range! Please note that this is an indoor unit and is not waterproof (as stated in the product description).

Soft Silicone AirPods Case Cover With Visible LED - Compatible With AirPod 2/1 Cases, Keychain Accessory Included - Ideal For Men, Women, Girls, And Boys - Light Pink
37 Review

Canvas Camera Case Bag With Shoulder Strap For DSLR/SLR Cameras - Black, Medium Size By Evecase
30 Review

Classic Camera Bag, Evecase Large Canvas Messenger SLR/DSLR Shoulder Case With Leather Trim, Tablet Compartment And Removable Insert For Mirrorless, Micro 4/3, Compact System, High Zoom Digital Camera
41 Review

A Durable And Protective CaseSack For Bose QuietComfort And SoundLink Headphones
41 Review