Aruba AP-515 Dual Radio 802.11ax Internal Antennas Unified Campus AP.

Aruba AP-515 RW Dual Radio 802.11ax Internal Antennas Unified Campus AP

- WiFi STD: Wifi 6 802.11ax - Recommend clients: 1024 - BW 5GHz: 2400 Mbps - BW 2.4GHz: 574 Mbps - MIMO: 2.4 GHz: 2x2
5 GHz: 4x4

Liên hệ

Wifi Aruba AP-303 Dual 2x2:2 Wifi Tầm Trung Giá Tốt

Thiết Bị Phát Wifi Aruba AP-303 Unified AP (JZ320A) Chuẩn AC Wave 2

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 866.7 Mbps - BW 2.4GHz: 300 Mbps - MIMO: 2x2

Liên hệ

Aruba AP-505 Dual Radio 802.11ax Internal Antennas Unified Campus AP.

Bộ Phát Wifi Aruba AP-505 (R2H28A) Wifi 6 PoE Indoor Giá Tốt

- WiFi STD: 802.11ax - Recommend clients: 512 - BW 5GHz: 1200 Mbps - BW 2.4GHz: 574 Mbps - MIMO: 2x2

Liên hệ Wifi 6, hỗ trợ 512 client.

Bộ phát wifi trong nhà chuẩn 6E Aruba AP-655 ba băng tần, 4x4:4.

Bộ phát wifi trong nhà chuẩn 6E Aruba AP-655 TAA ba băng tần, 4x4:4.

- WiFi STD: Wifi 6E 802.11ax - Recommend clients: 2048 - BW 5GHz: 2400 Mbps - BW 2.4GHz: 574 Mbps - MIMO: 4x4

Liên hệ

R7J54A Aruba AP-615 (RW) TAA Dual-radio Tri-band 2x2:2 802.11ax Wi-Fi 6E Internal Antennas Campus AP

Bộ phát Wi-Fi 6E Aruba AP-615 (RW) TAA Dual-radio Tri-band 2x2:2 802.11ax Internal Antennas

- WiFi STD: - - Recommend clients: - - BW 5GHz: - - BW 2.4GHz: - - MIMO: -

Liên hệ

AP-655-RW Aruba 650 series 802.11ax wi-fi 6E campus access point

- WiFi STD: 6E - Recommend clients: 2048 - BW 5GHz: 2400 - BW 2.4GHz: 574 - MIMO: 4

Liên hệ

AP-635 Aruba 630 series 802.11ax wi-fi 6E campus access point

AP-635-RW Aruba 630 series 802.11ax wi-fi 6E campus access point

- WiFi STD: 802.11ax Wi-fi 6E - Recommend clients: 1536 - BW 5GHz: 1200 Mbps - BW 2.4GHz: 574 Mbps - MIMO: 2x2

Liên hệ

Aruba AP-555 Dual Radio 802.11ax Internal Antennas Unified Campus AP

- WiFi STD: Wifi 6 802.11ax - Recommend clients: 3072 - BW 5GHz: 4800 Mbps - BW 2.4GHz: 1147 Mbps - MIMO: 2.4 GHz: 4x4
5 GHz: 8x8

Liên hệ

Aruba AP-534 Dual Radio 802.11ax External Antennas Unified Campus AP.

- WiFi STD: Wifi 6 802.11ax - Recommend clients: 2048 - BW 5GHz: 2400 Mbps - BW 2.4GHz: 1147 Mbps - MIMO: 4x4

Liên hệ

Aruba AP-535 Dual Radio 802.11ax Internal Antennas Unified Campus AP.

Aruba AP-535 (JZ336A) Dual Radio 802.11ax Internal Antennas Unified Campus AP

- WiFi STD: Wifi 6 802.11ax - Recommend clients: 2048 - BW 5GHz: 2400 Mbps - BW 2.4GHz: 1147 Mbps - MIMO: 4x4

Liên hệ

Aruba AP-514 Dual Radio 802.11ax External Antennas Unified Campus AP

- WiFi STD: Wifi 802.11ax - Recommend clients: 1024 - BW 5GHz: 2400 Mbps - BW 2.4GHz: 574 Mbps - MIMO: 2.4 GHz: 2x2
5 GHz: 4x4

Liên hệ

Aruba AP-504 Dual Radio 802.11ax External Antennas Unified Campus AP.

- WiFi STD: Wifi 6 802.11ax - Recommend clients: 512 - BW 5GHz: 1200 Mbps - BW 2.4GHz: 574 Mbps - MIMO: 2x2

Liên hệ

Aruba AP-344 Dual Radio Antenna Connectors Smart Rate Access Point.

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 2166 Mbps - BW 2.4GHz: 600 Mbps - MIMO: 4x4

Liên hệ

JZ031ACM Aruba AP-345 Radio Internal Antennas Smart Rate Unified Campus AP.

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 2166 Mbps - BW 2.4GHz: 600 Mbps - MIMO: 4x4

Liên hệ

Aruba Instant IAP-334 802.11n/ac Dual Radio Antenna Connectors 2.5+1 GbE AP

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 1733 Mbps - BW 2.4GHz: 600 Mbps - MIMO: 4x4

Liên hệ

Aruba Instant IAP-335 Dual Radio Integrated Antenna 2.5+1 GbE AP.

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 1733 Mbps - BW 2.4GHz: 600 Mbps - MIMO: 4x4

Liên hệ

Aruba Instant IAP-324 (US) 802.11n/ac Antenna Connectors AP.

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 1733 Mbps - BW 2.4GHz: 600 Mbps - MIMO: 4x4

Liên hệ

Aruba IAP-325 802.11n/ac Dual Radio Antenna Connectors AP.

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 1733 Mbps - BW 2.4GHz: 600 Mbps - MIMO: 4x4

Liên hệ

Aruba Instant IAP-314 802.11n/ac Dual Radio Antenna Connectors AP.

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 1733 Mbps - BW 2.4GHz: 300 Mbps - MIMO: 2.4 GHz: 2x2
5 GHz: 4x4VHT 80 or 2x2 VHT160

Liên hệ

Aruba Instant IAP-315 802.11n/ac Radio Integrated Antenna AP.

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 1733 Mbps - BW 2.4GHz: 300 Mbps - MIMO: 2.4 GHz: 2x2
5 GHz: 4x4VHT 80 or 2x2 VHT160

Liên hệ

Aruba 500H series Hospitality Access Point.

Aruba 505H series Hospitality Access Point.

- WiFi STD: Wifi 6 802.11ax - Recommend clients: 512 - BW 5GHz: 1200 Mbps - BW 2.4GHz: 287 Mbps - MIMO: 2x2

Liên hệ

Bộ phát wifi 6 Q9H72A Aruba AP-515 (RW) TAA.

- WiFi STD: 6 - Recommend clients: 1024 - BW 5GHz: 2400 - BW 2.4GHz: 574 - MIMO: 4

Liên hệ

Aruba 503H wifi 6 802.11ax 2x2 Unified Hospitality AP, 1+2 Ethernet port.

- WiFi STD: 6 - Recommend clients: 512 - BW 5GHz: 1200 - BW 2.4GHz: 287 - MIMO: 2

Liên hệ

JW818A Aruba IAP-334 RW 802.11ac wave 2 TAA access point.

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 1733 Mbps - BW 2.4GHz: 600 Mbps - MIMO: 4x4

Liên hệ

Bộ phát wifi Aruba AP-345 RW 802.11ac wave 2 Unified Campus AP

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 2166 Mbps - BW 2.4GHz: 600 Mbps - MIMO: 4x4

Liên hệ

Bộ phát wifi 6 Aruba Cloud-Managed AP-555-RW 8x8:8 / 4x4:4 802.11ax AP.

Bộ phát wifi 6 Aruba Cloud-Managed AP-555-RW JZ356ACM.

- WiFi STD: 6 - Recommend clients: 3072 - BW 5GHz: 4800 - BW 2.4GHz: 1147 - MIMO: 8

Liên hệ

JZ032A Aruba AP-345 (RW) TAA 802.11ac wave 2 internal antenna.

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 2166 Mbps - BW 2.4GHz: 600 Mbps - MIMO: 4x4

Liên hệ

Aruba AP-344 RW TAA JZ022A 802.11ac wave 2 4x4:4 MU-MIMO.

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 2166 Mbps - BW 2.4GHz: 600 Mbps - MIMO: 4x4

Liên hệ

Aruba IAP-335 (RW) TAA JW824A 802.11ac wave 2 access point.

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 1733 Mbps - BW 2.4GHz: 600 Mbps - MIMO: 4x4

Liên hệ

Bộ phát wifi 6 Aruba AP-555 (RW) TAA JZ366A chính hãng hai băng tần.

- WiFi STD: 6 - Recommend clients: 3072 - BW 5GHz: 4800 - BW 2.4GHz: 1147 - MIMO: 8

Liên hệ

Bộ phát wifi 6 Aruba 530 series JZ331A AP-534 RW TAA.

- WiFi STD: 6 - Recommend clients: 2048 - BW 5GHz: 2400 - BW 2.4GHz: 1147 - MIMO: 4

Liên hệ

Aruba AP-577 wifi 6 802.11ax hai băng tần, anten trong directional.

- WiFi STD: Wifi 6 802.11ax - Recommend clients: 1024 - BW 5GHz: 4800 Mbps - BW 2.4GHz: 575 Mbps - MIMO: 2.4 GHz: 2x2
5 GHz: 4x4

Liên hệ

Bộ phát wifi 6 Aruba 530 sries AP-535 RW TAA JZ346A

- WiFi STD: 6 - Recommend clients: 2048 - BW 5GHz: 2400 - BW 2.4GHz: 1147 - MIMO: 4

Liên hệ

Aruba AP-575 wifi 6 802.11ax hai băng tần, anten trong omni.

- WiFi STD: Wiffi 6 802.11ax - Recommend clients: 1024 - BW 5GHz: 4800 Mbps - BW 2.4GHz: 575 Mbps - MIMO: 2.4 GHz: 2x2
5 GHz: 4x4

Liên hệ

Aruba AP-577EX Outdoor 802.11ax Hazloc AP

- WiFi STD: Wifi 6 802.11ax - Recommend clients: 1024 - BW 5GHz: 4800 Mbps - BW 2.4GHz: 575 Mbps - MIMO: 2.4 GHz: 2x2
5 GHz: 4x4

Liên hệ

Aruba AP-575EX Outdoor 802.11ax Hazloc AP.

- WiFi STD: Wifi 6 802.11ax - Recommend clients: 1024 - BW 5GHz: 4800 Mbps - BW 2.4GHz: 575 Mbps - MIMO: 2.4 GHz: 2x2
5 GHz: 4x4

Liên hệ

Aruba AP-518 802.11ax Dual Radio 6xRPSMA Connectorized Indoor Hardened AP.

- WiFi STD: Wifi 6 802.11ax - Recommend clients: 1024 - BW 5GHz: 4800 Mbps - BW 2.4GHz: 575 Mbps - MIMO: 2.4 GHz: 2x2
5 GHz: 4x4

Liên hệ

Aruba AP-567 802.11ax Dual 2x2:2 Outdoor Access Point.

- WiFi STD: Wifi 6 802.11ax - Recommend clients: 512 - BW 5GHz: 1200 Mbps - BW 2.4GHz: 574 Mbps - MIMO: 2x2

Liên hệ

Aruba AP-565 Wi-fi 6 802.11ax dual band Outdoor AP.

- WiFi STD: Wifi 6 802.11ax - Recommend clients: 512 - BW 5GHz: 1200 Mbps - BW 2.4GHz: 574 Mbps - MIMO: 2x2

Liên hệ

Aruba AP-567EX 802.11ax hazrdous location Dual 2x2:2 Outdoor Access Point.

- WiFi STD: Wifi 6 802.11ax - Recommend clients: 512 - BW 5GHz: 1200 Mbps - BW 2.4GHz: 574 Mbps - MIMO: 2x2

Liên hệ

Bộ phát wifi 6 ngoài trời Aruba AP-565EX Internal Omni Antenna.

- WiFi STD: Wifi 6 802.11ax - Recommend clients: 512 - BW 5GHz: 1200 Mbps - BW 2.4GHz: 574 Mbps - MIMO: 2x2

Liên hệ

R7T30A Aruba AP-585EX (RW) TAA Wifi 6 Dual Radio, Internal Omni Antennas

- WiFi STD: 6 - Recommend clients: 512 - BW 5GHz: 2400 - BW 2.4GHz: 1150 - MIMO: 4

Liên hệ

Bộ phát wifi 6 AP-514 (RW) TAA Q9H67A antenna ngoài, hai băng tần.

- WiFi STD: 6 - Recommend clients: 1024 - BW 5GHz: 2400 - BW 2.4GHz: 574 - MIMO: 4

Liên hệ

R7T25A Aruba AP-587 RW TAA Wifi 6 Outdoor, Internal Directional Antennas

- WiFi STD: - - Recommend clients: - - BW 5GHz: - - BW 2.4GHz: - - MIMO: -

Liên hệ

R7T35A Aruba AP-587EX (RW) TAA Dual Radio Internal Directional Antennas

- WiFi STD: - - Recommend clients: - - BW 5GHz: - - BW 2.4GHz: - - MIMO: -

Liên hệ

R7T00A Aruba AP-584 (RW) Dual Radio Wifi 6 Outdoor External Antennas.

- WiFi STD: - - Recommend clients: - - BW 5GHz: - - BW 2.4GHz: - - MIMO: -

Liên hệ

R7T05A Aruba AP-585 (RW) Dual Radio Out Door Internal Omni Antennas.

- WiFi STD: - - Recommend clients: - - BW 5GHz: - - BW 2.4GHz: - - MIMO: -

Liên hệ

R7T10A Aruba AP-587 (RW) Wifi 6 Outdoor Internal Directional Antennas

- WiFi STD: - - Recommend clients: - - BW 5GHz: - - BW 2.4GHz: - - MIMO: -

Liên hệ

R7T15A Aruba AP-584 RW TAA Wifi 6 Outdoor, External Antennas Access Point.

- WiFi STD: - - Recommend clients: - - BW 5GHz: - - BW 2.4GHz: - - MIMO: -

Liên hệ

R7T20A Aruba AP-585 RW TAA Internal Omni Antennas Outdoor Access Point.

- WiFi STD: - - Recommend clients: - - BW 5GHz: - - BW 2.4GHz: - - MIMO: -

Liên hệ

Aruba AP-387 802.11ac/ad Dual 5/60GHz Integrated Antenna Outdoor Radio

- WiFi STD: 802.11ad (60GHz) and 802.11ac - Recommend clients: 512 - BW 5GHz: 5 GHz: 867 Mbps
60 GHz: 2500 Mbps - BW 2.4GHz: - - MIMO: 5 GHz: 2x2
60 GHz: 1x1

Liên hệ

Aruba AP-203H Flex-radio 802.11ac 2x2 Unified Hospitality AP

- WiFi STD: 802.11ac - Recommend clients: 512 - BW 5GHz: 867 Mbps - BW 2.4GHz: 400 Mbps - MIMO: 2x2

Liên hệ

Aruba AP-203R Flex-radio 802.11ac 2x2 Unified Remote AP

- WiFi STD: 802.11ac - Recommend clients: 512 - BW 5GHz: 867 Mbps - BW 2.4GHz: 400 Mbps - MIMO: 2x2

Liên hệ

Aruba Instant IAP-304 802.11n/ac MU-MIMO Radio Antenna Connectors AP.

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 1300 Mbps - BW 2.4GHz: 300 Mbps - MIMO: 2.4 GHz: 2x2
5 GHz: 3x3

Liên hệ

Aruba IAP-305 802.11n/ac MU-MIMO Radio Integrated Antenna Instant AP.

- WiFi STD: 802.11ac Wave 2 - Recommend clients: 512 - BW 5GHz: 1300 Mbps - BW 2.4GHz: 300 Mbps - MIMO: 2.4 GHz: 2x2
5 GHz: 3x3

Liên hệ

Aruba AP-367 802.11n/ac Dual Radio Integrated Directional Antenna Outdoor AP.

- WiFi STD: 802.11ac wave 2 - Recommend clients: 256 - BW 5GHz: 867 Mbps - BW 2.4GHz: 300 Mbps - MIMO: 2x2

Liên hệ

Aruba AP-318 802.11n/ac Dual Radio 6xRPSMA Connectors Indoor Hardened AP.

- WiFi STD: 802.11ac wave 2 - Recommend clients: 512 - BW 5GHz: 1733 Mbps - BW 2.4GHz: 300 Mbps - MIMO: 2.4 GHz: 2x2
5 GHz: 4x4

Liên hệ

Aruba AP-375EX 802.11n/ac Dual Radio Int Omni Antenna Outdoor Hazloc AP.

- WiFi STD: 802.11ac wave 2 - Recommend clients: 512 - BW 5GHz: 1733 Mbps - BW 2.4GHz: 300 Mbps - MIMO: 2.4 GHz: 2x2
5 GHz: 4x4

Liên hệ

Aruba AP-377 802.11n/ac Dual Radio Integrated Directional Antenna Outdoor AP

- WiFi STD: 802.11ac wave 2 - Recommend clients: 512 - BW 5GHz: 1733 Mbps - BW 2.4GHz: 300 Mbps - MIMO: 2.4 GHz: 2x2
5 GHz: 4x4

Liên hệ

JW240A - Aruba Instant IAP-225 (RW) 802.11n/ac Dual 3x3:3 Radio Integrated Antenna AP

- WiFi STD: 802.11ac - Recommend clients: 512 - BW 5GHz: 1300 Mbps - BW 2.4GHz: 600 Mbps - MIMO: 3x3

Liên hệ

Wifi HPE Aruba

Aruba AP-515 RW Dual Radio 802.11ax Internal Antennas Unified Campus AP

Thiết Bị Phát Wifi Aruba AP-303 Unified AP (JZ320A) Chuẩn AC Wave 2

Bộ Phát Wifi Aruba AP-505 (R2H28A) Wifi 6 PoE Indoor Giá Tốt

Bộ phát wifi trong nhà chuẩn 6E Aruba AP-655 TAA ba băng tần, 4x4:4.

Bộ phát Wi-Fi 6E Aruba AP-615 (RW) TAA Dual-radio Tri-band 2x2:2 802.11ax Internal Antennas

AP-655-RW Aruba 650 series 802.11ax wi-fi 6E campus access point

AP-635-RW Aruba 630 series 802.11ax wi-fi 6E campus access point

Aruba AP-555 Dual Radio 802.11ax Internal Antennas Unified Campus AP

Aruba AP-534 Dual Radio 802.11ax External Antennas Unified Campus AP.

Aruba AP-535 (JZ336A) Dual Radio 802.11ax Internal Antennas Unified Campus AP

Aruba AP-514 Dual Radio 802.11ax External Antennas Unified Campus AP

Aruba AP-504 Dual Radio 802.11ax External Antennas Unified Campus AP.

Aruba AP-344 Dual Radio Antenna Connectors Smart Rate Access Point.

JZ031ACM Aruba AP-345 Radio Internal Antennas Smart Rate Unified Campus AP.

Aruba Instant IAP-334 802.11n/ac Dual Radio Antenna Connectors 2.5+1 GbE AP

Aruba Instant IAP-335 Dual Radio Integrated Antenna 2.5+1 GbE AP.

Aruba Instant IAP-324 (US) 802.11n/ac Antenna Connectors AP.

Aruba IAP-325 802.11n/ac Dual Radio Antenna Connectors AP.

Aruba Instant IAP-314 802.11n/ac Dual Radio Antenna Connectors AP.

Aruba Instant IAP-315 802.11n/ac Radio Integrated Antenna AP.

Aruba 505H series Hospitality Access Point.

Bộ phát wifi 6 Q9H72A Aruba AP-515 (RW) TAA.

Aruba 503H wifi 6 802.11ax 2x2 Unified Hospitality AP, 1+2 Ethernet port.

JW818A Aruba IAP-334 RW 802.11ac wave 2 TAA access point.

Bộ phát wifi Aruba AP-345 RW 802.11ac wave 2 Unified Campus AP

Bộ phát wifi 6 Aruba Cloud-Managed AP-555-RW JZ356ACM.

JZ032A Aruba AP-345 (RW) TAA 802.11ac wave 2 internal antenna.

Aruba AP-344 RW TAA JZ022A 802.11ac wave 2 4x4:4 MU-MIMO.

Aruba IAP-335 (RW) TAA JW824A 802.11ac wave 2 access point.

Bộ phát wifi 6 Aruba AP-555 (RW) TAA JZ366A chính hãng hai băng tần.

Bộ phát wifi 6 Aruba 530 series JZ331A AP-534 RW TAA.

Aruba AP-577 wifi 6 802.11ax hai băng tần, anten trong directional.

Bộ phát wifi 6 Aruba 530 sries AP-535 RW TAA JZ346A

Aruba AP-575 wifi 6 802.11ax hai băng tần, anten trong omni.

Aruba AP-577EX Outdoor 802.11ax Hazloc AP

Aruba AP-575EX Outdoor 802.11ax Hazloc AP.

Aruba AP-518 802.11ax Dual Radio 6xRPSMA Connectorized Indoor Hardened AP.

Aruba AP-567 802.11ax Dual 2x2:2 Outdoor Access Point.

Aruba AP-565 Wi-fi 6 802.11ax dual band Outdoor AP.

Aruba AP-567EX 802.11ax hazrdous location Dual 2x2:2 Outdoor Access Point.

Bộ phát wifi 6 ngoài trời Aruba AP-565EX Internal Omni Antenna.

R7T30A Aruba AP-585EX (RW) TAA Wifi 6 Dual Radio, Internal Omni Antennas

Bộ phát wifi 6 AP-514 (RW) TAA Q9H67A antenna ngoài, hai băng tần.

R7T25A Aruba AP-587 RW TAA Wifi 6 Outdoor, Internal Directional Antennas

R7T35A Aruba AP-587EX (RW) TAA Dual Radio Internal Directional Antennas

R7T00A Aruba AP-584 (RW) Dual Radio Wifi 6 Outdoor External Antennas.

R7T05A Aruba AP-585 (RW) Dual Radio Out Door Internal Omni Antennas.

R7T10A Aruba AP-587 (RW) Wifi 6 Outdoor Internal Directional Antennas

R7T15A Aruba AP-584 RW TAA Wifi 6 Outdoor, External Antennas Access Point.

R7T20A Aruba AP-585 RW TAA Internal Omni Antennas Outdoor Access Point.

Aruba AP-387 802.11ac/ad Dual 5/60GHz Integrated Antenna Outdoor Radio

Aruba AP-203H Flex-radio 802.11ac 2x2 Unified Hospitality AP

Aruba AP-203R Flex-radio 802.11ac 2x2 Unified Remote AP

Aruba Instant IAP-304 802.11n/ac MU-MIMO Radio Antenna Connectors AP.

Aruba IAP-305 802.11n/ac MU-MIMO Radio Integrated Antenna Instant AP.

Aruba AP-367 802.11n/ac Dual Radio Integrated Directional Antenna Outdoor AP.

Aruba AP-318 802.11n/ac Dual Radio 6xRPSMA Connectors Indoor Hardened AP.

Aruba AP-375EX 802.11n/ac Dual Radio Int Omni Antenna Outdoor Hazloc AP.

Aruba AP-377 802.11n/ac Dual Radio Integrated Directional Antenna Outdoor AP

JW240A - Aruba Instant IAP-225 (RW) 802.11n/ac Dual 3x3:3 Radio Integrated Antenna AP

Danh mục sản phẩm