Performing triangulation of sound sources based on time-of-arrival distances requires multiple recorders precisely synchronized to the same clock, as small differences in time can translate to large inaccuracies in distance. The SM2, SM2Bat, SM3, and SM3Bat all contain hardware that, when paired with an external GPS accessory, allow them to maintain synchronicity with GPS time to within 1 millisecond, making them suitable for this kind of work.

The SM4 and SM4Bat FS/ZC do not have the hardware necessary for continual synchronization with GPS time and therefore cannot be used for triangulation.

• Why can't I use an adapter to connect a USB-C Echo Meter Touch to my Lightning iOS device?
• What iOS devices are compatible with my Echo Meter Touch module?
• Can I use Echo Meter Touch modules with USB connectors with iOS devices?
• What type of data port does my phone or tablet have?
• What type of plug does my Echo Meter Touch module have?
• What adapter do I need for my Echo Meter Touch module and Android or iOS device?
• How do I update the firmware on my Echo Meter Touch module with USB to add iOS compatibility?
• Are there acoustic differences between the first- and second-generation Mini Bat recorders?
• Will the Lithium-ion lids I used with first-generation Minis fit the new models?
• Will the security bracket accessory I use with first-generation Minis be compatible with the new models?
• Will Wildlife Acoustics continue to repair and support first-generation Minis with replacement parts?
• Are there size differences between the first- and second-generation Minis?
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