Collection: Timing, NTP and GPSD GNSS / GPS

Explore our Timing / NTP / GPSD GNSS receivers with 1PPS over USB, RS232, or TTL / UART. Built for clock sync, GPSD, and GNSS-disciplined NTP—from plug-and-play USB PPS models (typically ~0.5–1 ms) to serial/TTL PPS receivers for tighter timing.

Choose multi-constellation L1 (and selected dual-band) units with NMEA output, industrial housings, and waterproof options for servers, routers, PLCs, and embedded systems. Looking for an NTP GPS, GPSD PPS GNSS, or USB PPS timing receiver? Start here—filtered by interface so you can pick the right PPS path quickly.