Shelly 1PM Gen4 FISHFINDERS The vertical mounting rails have

The vertical mounting rails have threaded 12-24 holes and cable management slots for securing equipment to the steel frame

The M1250B is available with a wide array of clips and accessories allowing the microphone to be used for acoustic instruments

Two-way communication at a distance of up to 1000 meters

The EC-4BV can be locally unlocked via a four-digit PIN entry on the buttons

but it's NDAA compliant

Shelly 1PM Gen4 FISHFINDERS The vertical mounting rails haveShelly 1PM Gen4 16A Smart Relay with Power Metering Shelly 1PM Gen4: a 16A smart relay with integrated power metering, Wi Fi Matter Zigbee Bluetooth support, plus both local & cloud control for energy aware automation.