Essex Serial Or ASCII Output Keypad

These Keypads are selectable for 5 or 12 Volts. There are two pins directly above the connector on the back of the keypad, A jumper plug is installed on one of the pins. This is the default setting for 12 Volt operation. If you require 5 Volt operation, install the jumper plug on both pins. Normal Serial and Inverted Serial signals are open collector outputs with 2.2K pull-ups to the internal +5v. An annunciator beeps with each key press. When the LED control input is pulled low, the GREEN LED will be on and the RED LED will be off. When the input goes high the RED LED is on and the GREEN LED is off. The RED LED will blink with every key press. The LED control input is pulled to the internal +5v with a 2.2K resistor. An output is generated with each key press which can be used to drive a CCTV or Security Light. Available through the Blue wire (see Connector Wiring), this is an open collector output capable of sinking 1/4 A with a 30 second on time. 12 Pad 3x4

Specifications:
Output: Standard Serial ASCII Format
Voltage(s): 5 VDC, +/- 0.1V 20mA 12 VDC, +/- 3.0V 20mA
Temperature: -40 C to +70 C (-40 F to +160 F)
Default Baud/Parity: 9600 Baud, No Parity


The Essex Generic Serial Keypad outputs Standard ASCII Single Digit Hex Data as follows:
0 - 0x30 6 - 0x36
1 - 0x31 7 - 0x37
2 - 0x32 8 - 0x38
3 - 0x33 9 - 0x39
4 - 0x34 * - 0x2A
5 - 0x35 # - 0x23




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