Different UHF Tags

Model	UCODE-8	Higgs-3	Higgs-9	Monza R6-P	Monza R6	Monza‑4	Monza 5
Manufacturer	NXP	Alien	Alien	Impinj	Impinj	Impinj	Impinj
EPC Capacity	128 bits	96 bits	96–496 (expandable)	96–128 bits	Up to 96 bits	128 bits	Up to 128 bits
User Memory	0 or 32 bits	512 bits	688 bits	32–64 bits	None	512 bits	32 bits
Sensitivity	-23 dBm	-18 dBm	-20 or -22.5 dBm	-22.1 dBm	-22.1 dBm	-19.5 or -22 dBm	-20 dBm
Key Features	High sensitivity, brand authentication, automatic frequency tuning, 4-sided pad	Dynamic EPC/user memory, data lock, security authentication	Large memory, antenna compatibility with Higgs‑3	Flexible memory configuration, high sensitivity, low power consumption	Exceptionally high read/write sensitivity, no user memory, AutoTune & Integra diagnostics	Enhanced memory capacity, built‑in data encryption, Fast‑ID mode	Industry‑leading write speed, superior encoding throughput, optimized for high‑volume applications
Compliance	EPC Gen2v2	EPC Gen2	EPC Gen2	EPC Gen2v2	EPC Gen2v2	EPC Gen2v2	EPC Gen2v2