... 10 Adjective outside the back of base: ( I1; I2; I3; O1; O2; O3; RELAY1; RELAY2; SPEAKER; GND ): ... .the other point of speaker connect to ground. GND, power ground HOW TO PROGRAM THE PHONE AND MESSAGE? The ... input port I1, I2, I3 to make alarm When you connect input port I1 to the ground, the alarm ... set on message. When you connect input port I3 to the ground, the alarm function will initiate, and ...