[pairodice]

This was under my booth dinette where my in-built vacuum resides. Any ideas what it might be? No markings - maybe for the phone/doorbell system?  I don’t see a speaker on it… Grok thinks it is: It could be for the furnace/water heater ignition — Suburban or similar RV appliances often use spark ignition modules that look very similar (big filter chokes for EMI suppression, capacitors, and terminals for 12V power, ground, thermostat input, and high-voltage output to electrodes). The labels like T- T+ often mean transformer/coil terminals, IN- for sensor input, and cryptic ones like OW ID IGH could be worn/abbreviated for “output white”, “ignition drive”, “ignition high/ground”.