Item Ref Value/Part Manufacturer Description Digikey P/N 1 C1 39pF Capacitor, Ceramic, Radial 399-1910-ND 2 C2 39pF Capacitor, Ceramic, Radial 399-1910-ND 3 C3 2.2uF Capacitor, Ceramic, Radial 399-2186-ND 4 C4 2.2uF Capacitor, Ceramic, Radial 399-2186-ND 5 C5 2.2uF Capacitor, Ceramic, Radial 399-2186-ND 6 C6 2.2uF Capacitor, Ceramic, Radial 399-2186-ND 7 C7 .33uF Capacitor, Ceramic, Radial 399-2158-ND 8 C8 .33uF Capacitor, Ceramic, Radial 399-2158-ND 9 D1 LED LED 67-1402-ND 10 D2 LED LED 67-1402-ND 11 D3 LED LED 67-1402-ND 12 D4 LED LED 67-1402-ND 13 D5 LED LED 67-1402-ND 14 J1 520251-4 AMP Connector, RJ Modular, 8 Pin A9044-ND 15 J2 520250-3 AMP Connector, RJ Modular, 6 Pin A9043-ND 16 J3 PJ-002BH CUI Stack Connector, Coaxial 2.5mm CP-002BH-ND 17 J4 22-03-2021 Molex HEADER, 1 X 2 WM4000-ND 18 K1 HE3621 Hamlin 5V SPST Relay w/Diode HE207-ND 19 K2 HE3621 Hamlin 5V SPST Relay w/Diode HE207-ND 20 K3 HE3621 Hamlin 5V SPST Relay w/Diode HE207-ND 21 K4 HE3621 Hamlin 5V SPST Relay w/Diode HE207-ND 22 R1 10.0K Resistor, 1/4W Metal Film 10.0KXBK-ND 23 R2 1.50K Resistor, 1/4W Metal Film 1.5KXBK-ND 24 R3 1.50K Resistor, 1/4W Metal Film 1.5KXBK-ND 25 R4 1.50K Resistor, 1/4W Metal Film 1.5KXBK-ND 26 R5 1.50K Resistor, 1/4W Metal Film 1.5KXBK-ND 27 R6 1.50K Resistor, 1/4W Metal Film 1.5KXBK-ND 28 U1 LT1081 Linear Tech 5V RS232 Dual Driver/Receiver LT1081CN-ND 29 U2 AT90S4433 Atmel 8-Bit RISC Microcontroller AT90LS4433-4PC-ND 30 U3 UA7805CKC Texas Inst 5V Voltage Regulator 296-1974-5-ND 31 Y1 4.00 MHz CTS Crystal, 4MHz CTX006-ND