The "Sprint" handset is the standard handset used in all the Bticino audio kits.
The 2 wire version looks the same - please check carefully to ensure that you order the correct unit.
The handset has recently been updated with a new model. All connections are the same, simply a new style. The latest model will be sent out on all orders. It is a white wall mounted handset with electronic call tone, lock release button and call volume control switch. There is the facility to add additional buttons or call exclusion switch if required.
 
Early model
Dimensions: H 200mm x W 95mm x D67mm Has blue release button. 
 
Latest model. All white, slightly triangular in shape.