Filter By

Availability

Availability

Selections

Selections

Price

Price

  • BDT 0.00 - BDT 230,000.00

Categories

Categories

Brand

Brand

Condition

Condition

Weight

Weight

  • 0 kg - 2,500 kg

  • Banner

Active filters
  • Categories: Arduino Boards
  • Categories: Industrial Component
  • Categories: Motor
  • Categories: PLC
  • Categories: Power Module & Adapter
  • Condition: New

Reference: RBD-1344

Current to Voltage Transmitter Module

(0)
Supply voltage range: DC 7 V ~ 35 V Output voltage signal: 0 ~ 2.5 v, 3.3 v, 5 v, 10 v, 15 V. 4-20mA to 0-15V,0-5V,0-10V
BDT 590.00
BDT 590.00 tax incl.
BDT 590.00 tax excl.
BDT 590.00 tax excl.
BDT 590.00 tax incl.
BDT 590.00 tax incl.
BDT 0.00 Tax
BDT 590.00 tax excl.
BDT 590.00 tax excl.
BDT 0.00 Tax
BDT 590.00 tax incl.
More
In-Stock
In stock: 38

Reference: RBD-0919

TP4056 Lithium Battery Charger Module With Protection Dual Functions

(0)
Dimension: 25 x 19 x 10 (LxWxH)mm. Input interface: micro USB. Current Protection: Yes Charging mode: Linear charging. Current: 1A adjustable. Charge precision: 1.5%. Input voltage: 4.5V-5.5V. Full charge voltage: 4.2V.
BDT 38.00
BDT 38.00 tax incl.
BDT 38.00 tax excl.
BDT 38.00 tax excl.
BDT 38.00 tax incl.
BDT 38.00 tax incl.
BDT 0.00 Tax
BDT 38.00 tax excl.
BDT 38.00 tax excl.
BDT 0.00 Tax
BDT 38.00 tax incl.
More
In-Stock
In stock: 838

Reference: RBD-0750

85mm Antiskid Shockproof Wheels, Smart Car Robot Tires with 37GB Motor

(0)
Tire with sponge liner for more strength With upgraded tire tread for greater friction New design wheel for better combination with the motor Diameter: 85 mm Width : 38 mm The material of Wheel: High-strength plastic The material of Tyre: Rubber Color: Black Tyre + Blue Rim
BDT 2,350.00
BDT 2,350.00 tax incl.
BDT 2,350.00 tax excl.
BDT 2,350.00 tax excl.
BDT 2,350.00 tax incl.
BDT 2,350.00 tax incl.
BDT 0.00 Tax
BDT 2,350.00 tax excl.
BDT 2,350.00 tax excl.
BDT 0.00 Tax
BDT 2,350.00 tax incl.
More
Last items in stock
In stock: 1

Reference: RBD-0457

S7-200 CPU224XP 6ES7214-2BD23-0XB0

(0)
SIMATIC S7-200, CPU 224XP COMPACT UNIT, AC POWER SUPPLY 14DI DC/10DO RELAY, 2AI, 1AO, 12/16 KB CODE/10 KB DATA, 2 PPI/FREEPORT PORTS Part No: 6ES7214-2BD23-0XB0 Model: CPU 224XP AC/DC/Relay 14 Inputs/10 Relays
BDT 60,000.00
BDT 60,000.00 tax incl.
BDT 60,000.00 tax excl.
BDT 60,000.00 tax excl.
BDT 60,000.00 tax incl.
BDT 60,000.00 tax incl.
BDT 0.00 Tax
BDT 60,000.00 tax excl.
BDT 60,000.00 tax excl.
BDT 0.00 Tax
BDT 60,000.00 tax incl.
More
In-Stock
In stock: 5

Reference: RBD-0963

KEWEISI KWS-10VA USB TESTER AMMETER-VOLTMETER

(0)
Current and voltage display in turn, easy and comfortable to use. Small and portable, do not need other power supply. Measuring range: DC 3V – 9V / 0 – 3A (up to 5A ) Portable Device Interface: USB2.0, USB3.0 Product Weight: 0.025 kg Two output ports
BDT 360.00
BDT 360.00 tax incl.
BDT 360.00 tax excl.
BDT 360.00 tax excl.
BDT 360.00 tax incl.
BDT 360.00 tax incl.
BDT 0.00 Tax
BDT 360.00 tax excl.
BDT 360.00 tax excl.
BDT 0.00 Tax
BDT 360.00 tax incl.
More
In-Stock
In stock: 4

Reference: RBD-0838

Arduino Pro Micro 5V/16MHz

(0)
ATMEGA32U4 running in 5V / 16MHz Support Arduino IDE V1.0.1 Micro USB interface programming on the board Four 10-bit ADC pin 12 digital I / O (5 PWM capability) Rx and Tx hardware serial connection. RoboticsBD
BDT 870.00
BDT 870.00 tax incl.
BDT 870.00 tax excl.
BDT 870.00 tax excl.
BDT 870.00 tax incl.
BDT 870.00 tax incl.
BDT 0.00 Tax
BDT 870.00 tax excl.
BDT 870.00 tax excl.
BDT 0.00 Tax
BDT 870.00 tax incl.
More
In-Stock
In stock: 41

Reference: RBD-0817

Nema 23 23HS5628 Stepper Motor

(0)
Step Angle Step Angle: 1.8 ° Current: 2.8 A/Phase Holding Torque: 10.1 N-cm Detent torque: 3.6 N.cm (Maximum) Lead Wires: 4 Shaft diameter: 8.00 mm
BDT 2,990.00
BDT 2,990.00 tax incl.
BDT 2,990.00 tax excl.
BDT 2,990.00 tax excl.
BDT 2,990.00 tax incl.
BDT 2,990.00 tax incl.
BDT 0.00 Tax
BDT 2,990.00 tax excl.
BDT 2,990.00 tax excl.
BDT 0.00 Tax
BDT 2,990.00 tax incl.
More
In-Stock
In stock: 20

Reference: RBD-0491

Omron Proximity Sensor Switch Omron E2E-X5ME1

(0)
Sensor Type: Inductive Sensing Distance: 0.197" (5mm) Output Type: NPN-NO, 3-Wire Response Frequency: 400Hz
BDT 1,299.00
BDT 1,299.00 tax incl.
BDT 1,299.00 tax excl.
BDT 1,299.00 tax excl.
BDT 1,299.00 tax incl.
BDT 1,299.00 tax incl.
BDT 0.00 Tax
BDT 1,299.00 tax excl.
BDT 1,299.00 tax excl.
BDT 0.00 Tax
BDT 1,299.00 tax incl.
More
Last items in stock
In stock: 2

Reference: RBD-0458

Siemens Logo 6ED1052-1MD00-0BA8

(0)
Siemens LOGO!8 12/24 RCE - 6ED1052-1MD00-0BA8 LOGO! 12/24RCE, logic module with display, voltage supply: 12/24V DC/relay, 8DI (Digital Inputs), 4 of which can be used as AI (Analogue Inputs), 4DO (Digital Outputs), memory: 400 blocks, expandable, Ethernet, integral web server, data logging, standard micro SD card, for LOGO! SOFT COMFORT from version 8,...
BDT 14,000.00
BDT 14,000.00 tax incl.
BDT 14,000.00 tax excl.
BDT 14,000.00 tax excl.
BDT 14,000.00 tax incl.
BDT 14,000.00 tax incl.
BDT 0.00 Tax
BDT 14,000.00 tax excl.
BDT 14,000.00 tax excl.
BDT 0.00 Tax
BDT 14,000.00 tax incl.
More
Out-of-Stock
In stock: -1

Reference: RBD-2053

Arduino Pro Micro 5V/16MHz Type-C

(0)
ATMEGA32U4 running in 5V / 16MHz Support Arduino IDE V1.0.1 Micro USB interface programming on the board Four 10-bit ADC pin 12 digital I / O (5 PWM capability) Rx and Tx hardware serial connection. RoboticsBD
BDT 755.00
BDT 755.00 tax incl.
BDT 755.00 tax excl.
BDT 755.00 tax excl.
BDT 755.00 tax incl.
BDT 755.00 tax incl.
BDT 0.00 Tax
BDT 755.00 tax excl.
BDT 755.00 tax excl.
BDT 0.00 Tax
BDT 755.00 tax incl.
More
In-Stock
In stock: 16

Reference: RBD-0988

18650 Battery Holder 3S with wire

(0)
Hold 3 standard 18650 batteries. Wire Length: 15 cm. Output: 11.1 V. Dimension (Appro.) : 76 x 60 x 18 mm. Weight: 18 gm. High-quality plastic material
BDT 75.00 BDT 90.00
BDT 90.00 BDT 75.00 tax incl.
BDT 90.00 BDT 75.00 tax excl.
BDT 90.00 BDT 75.00 tax excl.
BDT 90.00 BDT 75.00 tax incl.
BDT 90.00 BDT 75.00 tax incl.
BDT 0.00 BDT 0.00 Tax
BDT 90.00 BDT 75.00 tax excl.
BDT 90.00 BDT 75.00 tax excl.
BDT 0.00 BDT 0.00 Tax
BDT 90.00 BDT 75.00 tax incl.
More
In-Stock
In stock: 350

Reference: RBD-0818

LDX-218 Servo Motor

(0)
17kg large torque. 15 kg·cm (208 oz·in) @6V 17 kg·cm (236 oz·in) @7.4V Full metal gear 180 degree rotation Using high-precision potentiometer with new design Convenient plug-in wire
BDT 2,490.00
BDT 2,490.00 tax incl.
BDT 2,490.00 tax excl.
BDT 2,490.00 tax excl.
BDT 2,490.00 tax incl.
BDT 2,490.00 tax incl.
BDT 0.00 Tax
BDT 2,490.00 tax excl.
BDT 2,490.00 tax excl.
BDT 0.00 Tax
BDT 2,490.00 tax incl.
More
In-Stock
In stock: 18

Reference: RBD-0492

Omron Proximity Sensor Switch E2E-X5MF2-Z

(0)
Proximity-sensing / Diffuse Type Voltage: DC 6-36V Current: 300mA Sensory Distance: 5mm
BDT 1,299.00
BDT 1,299.00 tax incl.
BDT 1,299.00 tax excl.
BDT 1,299.00 tax excl.
BDT 1,299.00 tax incl.
BDT 1,299.00 tax incl.
BDT 0.00 Tax
BDT 1,299.00 tax excl.
BDT 1,299.00 tax excl.
BDT 0.00 Tax
BDT 1,299.00 tax incl.
More
In-Stock
In stock: 10

Reference: RBD-0459

S7-300 CPU313C-2DP 6ES7 313-6CE01-0AB0

(0)
Model: S7-300 CPU313C-2DP Part No: 6ES7 313-6CE01-0AB0 Made in Germany SIMATIC S7-300, CPU 313C-2DP COMPACT CPU WITH MPI, 16 DI/16 DO, 3 FAST COUNTERS (30 KHZ), INTEGRATED DP INTERFACE, INTEGRATED 24V DC POWER SUPPLY, 32 KBYTE WORKING MEMORY, FRONT CONNECTOR (1 X 40PIN) AND MICRO MEMORY CARD REQUIRED
BDT 155,000.00
BDT 155,000.00 tax incl.
BDT 155,000.00 tax excl.
BDT 155,000.00 tax excl.
BDT 155,000.00 tax incl.
BDT 155,000.00 tax incl.
BDT 0.00 Tax
BDT 155,000.00 tax excl.
BDT 155,000.00 tax excl.
BDT 0.00 Tax
BDT 155,000.00 tax incl.
More
Last items in stock
In stock: 2

Reference: RBD-0989

18650 Battery Holder – 1 Cell

(0)
Hold A standard 18650 batteries Wire : 15cm Output: 3.7v Dimension (Appro.): 76x20x20xmm Weight: 8gm High-quality plastic material
BDT 40.00
BDT 40.00 tax incl.
BDT 40.00 tax excl.
BDT 40.00 tax excl.
BDT 40.00 tax incl.
BDT 40.00 tax incl.
BDT 0.00 Tax
BDT 40.00 tax excl.
BDT 40.00 tax excl.
BDT 0.00 Tax
BDT 40.00 tax incl.
More
In-Stock
In stock: 135

Reference: RBD-0819

Hiwonder LDX-227 Servo

(0)
17kg large torque. 15 kg·cm (208 oz·in) @6V 17 kg·cm (236 oz·in) @7.4V Full metal gear 270 degree rotation Using high-precision potentiometer with new design Convenient plug-in wire
BDT 2,250.00
BDT 2,250.00 tax incl.
BDT 2,250.00 tax excl.
BDT 2,250.00 tax excl.
BDT 2,250.00 tax incl.
BDT 2,250.00 tax incl.
BDT 0.00 Tax
BDT 2,250.00 tax excl.
BDT 2,250.00 tax excl.
BDT 0.00 Tax
BDT 2,250.00 tax incl.
More
In-Stock
In stock: 20

Reference: RBD-0686

NJK-5002C Hall Effect Proximity Sensor

(0)
Supply voltage 5-30VDC Detection distance 10mm (effective detection distance 0-10mm) Load current 150MA (no more than) Output form NPN three lines
BDT 899.00
BDT 899.00 tax incl.
BDT 899.00 tax excl.
BDT 899.00 tax excl.
BDT 899.00 tax incl.
BDT 899.00 tax incl.
BDT 0.00 Tax
BDT 899.00 tax excl.
BDT 899.00 tax excl.
BDT 0.00 Tax
BDT 899.00 tax incl.
More
In-Stock
In stock: 38

Reference: RBD-0460

S7-300 SM322 6ES7 322-1BH01-0AA0

(0)
Model: S7-300 SM322 Part No: 6ES7 322-1BH01-0AA0 Made in Germany SIMATIC S7-300, DIGITAL OUTPUT SM 322, OPTICALLY ISOLATED, 16 DO, 24V DC, 0.5A, 1 X 20 PIN SUM OF OUTPUT CURRENTS 4A/GROUP (8A/MODULE)
BDT 25,000.00
BDT 25,000.00 tax incl.
BDT 25,000.00 tax excl.
BDT 25,000.00 tax excl.
BDT 25,000.00 tax incl.
BDT 25,000.00 tax incl.
BDT 0.00 Tax
BDT 25,000.00 tax excl.
BDT 25,000.00 tax excl.
BDT 0.00 Tax
BDT 25,000.00 tax incl.
More
In stock
In stock: 7

Reference: RBD-0136

Arduino Due

(0)
Microcontroller: AT91SAM3X8E Operating Voltage: 3.3V Input Voltage (recommended): 7-12V Input Voltage (limits): 6-16V Digital I/O Pins: 54 (of which 12 provide PWM output) Analog Input Pins: 12 Analog Outputs Pins: 2 (DAC) A 32-bit core, that allows operations on 4 bytes wide data within a single CPU clock. CPU clock at 84Mhz 96KBytes of SRAM
BDT 3,990.00
BDT 3,990.00 tax incl.
BDT 3,990.00 tax excl.
BDT 3,990.00 tax excl.
BDT 3,990.00 tax incl.
BDT 3,990.00 tax incl.
BDT 0.00 Tax
BDT 3,990.00 tax excl.
BDT 3,990.00 tax excl.
BDT 0.00 Tax
BDT 3,990.00 tax incl.
More
In-Stock
In stock: 19

Reference: RBD-1809

Digispark Pro - ATtiny167 with Micro USB

(0)
Digispark Pro  ATtiny167  Micro USB 16MHz
BDT 539.00 BDT 549.00
BDT 549.00 BDT 539.00 tax incl.
BDT 549.00 BDT 539.00 tax excl.
BDT 549.00 BDT 539.00 tax excl.
BDT 549.00 BDT 539.00 tax incl.
BDT 549.00 BDT 539.00 tax incl.
BDT 0.00 BDT 0.00 Tax
BDT 549.00 BDT 539.00 tax excl.
BDT 549.00 BDT 539.00 tax excl.
BDT 0.00 BDT 0.00 Tax
BDT 549.00 BDT 539.00 tax incl.
More
In-Stock
In stock: 29

Reference: RBD-1365

Uni-T UTi85H+ Professional Thermal Imager

(0)
Central point temperature measurement high/low temperature auto tracking real-time temperature display  Alarm buzzer: >37.2ºC: high temperature audible alarm
BDT 39,000.00
BDT 39,000.00 tax incl.
BDT 39,000.00 tax excl.
BDT 39,000.00 tax excl.
BDT 39,000.00 tax incl.
BDT 39,000.00 tax incl.
BDT 0.00 Tax
BDT 39,000.00 tax excl.
BDT 39,000.00 tax excl.
BDT 0.00 Tax
BDT 39,000.00 tax incl.
More
Last items in stock
In stock: 1

Reference: RBD-1309

Raspberry Pi Power Adapter with Switch Micro USB

(0)
Input Voltage (V): 100 ~ 280 VAC @50 ~ 60Hz. Input current (mA): 100. Output Power: 5V 3A. Load regulation (%): ±5. Input Plug: 2-Pin EU type. Output Plug: Micro USB Plug. Compatible with: Raspberry Pi B+, 2, 2B, 2B+,3 ,3B+, Zero, Zero W. It has a switch so you can easily power off the device without having to unplug it right from the socket.
BDT 525.00
BDT 525.00 tax incl.
BDT 525.00 tax excl.
BDT 525.00 tax excl.
BDT 525.00 tax incl.
BDT 525.00 tax incl.
BDT 0.00 Tax
BDT 525.00 tax excl.
BDT 525.00 tax excl.
BDT 0.00 Tax
BDT 525.00 tax incl.
More
In-Stock
In stock: 27

Reference: RBD-0461

S7-300 IM 361 6ES7361-3CA01-0AA0

(0)
(PRICE NEGOTIABLE) Model: S7-300 IM 361 Part No: 6ES7361-3CA01-0AA0 Made in Germany SIMATIC S7-300,INTERFACE MODULE IM 361 IN EXPANSION RACK FOR CONNECTING TO CENTRAL RACK (IM360),24 V DC SUPPLY VOLTAGE, WITH K-BUS
BDT 0.00
BDT 0.00 tax incl.
BDT 0.00 tax excl.
BDT 0.00 tax excl.
BDT 0.00 tax incl.
BDT 0.00 tax incl.
BDT 0.00 Tax
BDT 0.00 tax excl.
BDT 0.00 tax excl.
BDT 0.00 Tax
BDT 0.00 tax incl.
Last items in stock
In stock: 2

Reference: RBD-0420

Vibration Motor

(0)
Voltage Range: DC 2.5-4V. Motor Diameter: 10 mm. RoboticsBD Motor Thickness: 3.4 mm. Min. Rated Speed: 9000RPM Max. Rated Current: 60mA
BDT 150.00
BDT 150.00 tax incl.
BDT 150.00 tax excl.
BDT 150.00 tax excl.
BDT 150.00 tax incl.
BDT 150.00 tax incl.
BDT 0.00 Tax
BDT 150.00 tax excl.
BDT 150.00 tax excl.
BDT 0.00 Tax
BDT 150.00 tax incl.
More
In-Stock
In stock: 40

Reference: RBD-1414

NVIDIA Jetson Nano 5V 4A DC Power Adapter

(0)
Input Voltage (V): 100 ~ 270 VAC @50 ~ 60Hz. Input current (mA): 100. Output Power: 5V 4A. Load regulation (%): ±5. Input Plug: 2-Pin US type. Output Plug: DC Jack 5.5mm.
BDT 1,150.00
BDT 1,150.00 tax incl.
BDT 1,150.00 tax excl.
BDT 1,150.00 tax excl.
BDT 1,150.00 tax incl.
BDT 1,150.00 tax incl.
BDT 0.00 Tax
BDT 1,150.00 tax excl.
BDT 1,150.00 tax excl.
BDT 0.00 Tax
BDT 1,150.00 tax incl.
More
In-Stock
In stock: 35

Reference: RBD-1366

Infrared Temperature Gun Digital Thermometer

(0)
DT8380FC Infrared Thermometer Item no.: DT8380FC Temperature Range: -50~380°C/-58~716°F Measuring Accuracy: ±2% or 2C Distance Ratio: 12:1
BDT 3,499.00
BDT 3,499.00 tax incl.
BDT 3,499.00 tax excl.
BDT 3,499.00 tax excl.
BDT 3,499.00 tax incl.
BDT 3,499.00 tax incl.
BDT 0.00 Tax
BDT 3,499.00 tax excl.
BDT 3,499.00 tax excl.
BDT 0.00 Tax
BDT 3,499.00 tax incl.
More
In-Stock
In stock: 38

Reference: RBD-0912

8x20mm Coreless Motor with 55mm Propeller Pair

(0)
Model: 8020 Shaft Size: 1.0 mm Rated Voltage: 3.7 V. Rated RPM: 39000. Wire Length: 6cm Prop. Length: 55 
BDT 280.00
BDT 280.00 tax incl.
BDT 280.00 tax excl.
BDT 280.00 tax excl.
BDT 280.00 tax incl.
BDT 280.00 tax incl.
BDT 0.00 Tax
BDT 280.00 tax excl.
BDT 280.00 tax excl.
BDT 0.00 Tax
BDT 280.00 tax incl.
More
In-Stock
In stock: 81

Reference: RBD-0462

S7-300 SM321 6ES7 321-1BH02-0AA0

(0)
Model: SIMATIC S7-300 SM321 Part No: 6ES7 321-1BH02-0AA0 Made in Germany SIMATIC S7-300, DIGITAL INPUT SM 321, OPTICALLY ISOLATED, 16DI, 24 V DC, 1 X 20 PIN
BDT 25,000.00
BDT 25,000.00 tax incl.
BDT 25,000.00 tax excl.
BDT 25,000.00 tax excl.
BDT 25,000.00 tax incl.
BDT 25,000.00 tax incl.
BDT 0.00 Tax
BDT 25,000.00 tax excl.
BDT 25,000.00 tax excl.
BDT 0.00 Tax
BDT 25,000.00 tax incl.
More
In-Stock
In stock: 6

Reference: RBD-0154

Arduino Leonardo R3

(0)
Microcontroller: ATmega32u4 Operating Voltage: 5V Input Voltage (Recommended): 7-12V Input Voltage (limits): 6-20V Digital I/O Pins: 20 PWM Channels: 7 Analog Input Channels: 12
BDT 790.00
BDT 790.00 tax incl.
BDT 790.00 tax excl.
BDT 790.00 tax excl.
BDT 790.00 tax incl.
BDT 790.00 tax incl.
BDT 0.00 Tax
BDT 790.00 tax excl.
BDT 790.00 tax excl.
BDT 0.00 Tax
BDT 790.00 tax incl.
More
In-Stock
In stock: 28

Reference: RBD-1524

LM2596 DC DC Step Down Buck Converter with Digital Tube Display

(0)
Input Voltage(VDC): 4 ~ 40. Output Voltage(VDC): 1.3 ~ 37. Output Current: 2A Rated, ( 3A maximum with heat sink). Switching Frequency: 150 kHz. Input reverse polarity protection. Built-in output short protection function.
BDT 259.00
BDT 259.00 tax incl.
BDT 259.00 tax excl.
BDT 259.00 tax excl.
BDT 259.00 tax incl.
BDT 259.00 tax incl.
BDT 0.00 Tax
BDT 259.00 tax excl.
BDT 259.00 tax excl.
BDT 0.00 Tax
BDT 259.00 tax incl.
More
In stock
In stock: 175

Reference: RBD-1401

Festo SMT-10M-PS-24V-E-0,3-L-M8D

(0)
Measured variable Position Measuring principle Magneto-resistive Ambient temperature -40 °C ... 70 °C Repetition accuracy 0.2 mm Switching output PNP Switching element function N/O contact On time ≤1.3 ms Switch-off time ≤1.4 ms Max. switching frequency 150 Hz Max. output current 100 mA Max. output current in mounting kits 50 mA Max. switching capacity DC...
BDT 12,000.00
BDT 12,000.00 tax incl.
BDT 12,000.00 tax excl.
BDT 12,000.00 tax excl.
BDT 12,000.00 tax incl.
BDT 12,000.00 tax incl.
BDT 0.00 Tax
BDT 12,000.00 tax excl.
BDT 12,000.00 tax excl.
BDT 0.00 Tax
BDT 12,000.00 tax incl.
More
Out-of-Stock
In stock: 0

Reference: RBD-0913

6V-12V Mini Air Pump Motor

(0)
High-Quality Pump Operating Voltage 12VDC Air pump rate: 4 LPM Current Consumption: 300mA Low Noise Operation Durable and Longer Lasting
BDT 620.00
BDT 620.00 tax incl.
BDT 620.00 tax excl.
BDT 620.00 tax excl.
BDT 620.00 tax incl.
BDT 620.00 tax incl.
BDT 0.00 Tax
BDT 620.00 tax excl.
BDT 620.00 tax excl.
BDT 0.00 Tax
BDT 620.00 tax incl.
More
In-Stock
In stock: 15

Follow us on Facebook