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+# Info
+Auger on SSR for frequent switching
+Exhaust on SSR for inductive load
+Igniter on Songlei
+
+# SRD-40-DC
+Solid state relays
+
+### Overall
+```
+W(x) - 45.75 mm
+L(y) - 63.00 mm
+D(z) - 23.75 mm
+```
+### Holes
+Location: Centered on `W(x)`
+
+```
+Top: 4.25 x 7.25 mm (diameter by length)
+Bottom: 4.25 mm (diameter)
+Inside E2E: 42.00 mm <---> 53.50 mm
+Outside E2E: 4.30 mm <---> 4.30 mm
+```
+
+# Relay Mobules
+Amazon prepackaged baddies.
+
+### Overall
+```
+W(x) - 70.30 mm
+L(y) - 16.90 mm
+D(z) - 18.25 mm
+```
+
+### Holes
+Location: Four outside corners of `W(x)`/`L(y)`
+
+```
+Diameter: 2.50 mm
+Outside E2E: 0.60 mm
+```
+
+# Terminal Block
+Home Depot special, temporary until PCB.
+
+### Overall
+```
+W(x) - 34.00 mm
+L(y) - 135.25 mm
+D(z) - 16.00 mm
+```
+
+### Holes
+Location: Four outside corners of `W(x)`/`L(y)`
+
+```
+Diameter: - 5.40 mm
+Outside E2E L(y) - 3.10 mm
+Outside E2C L(y) - 5.80 mm
+Inside E2E W(x) - 7.45 mm
+Inside C2C W(x) - 12.85 mm
+```
+
+45.08-8.45=36.63
+```
+Top of terminal: 135.25 mm
+L of RM: 16.9 mm
+1/2: 8.45
+Middle of top RM: 101.4375 (109.8875)
+Mid of mid RM: 67.625 (76.075)
+Mid of bot RM: 33.8125 (42.2625)
+```
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