Model INON D-2000 Type4
Strobe Control Mode (*1) S-TTL Auto / External Auto / Manual / TTL Auto (*10)
Connection (*1) Wireless connection / Optical D Cable / Optical Cable / Optical D Slave Cable
Guide Number (*2) 20 [without diffuser]
17 [with optional -0.5 White Diffuser]
12 [with optional -1.5 White Diffuser]
Settable Flash Output (*2) 20(FULL) 17(-0.5) 14(-1) 12(-1.5) 10(-2) 8.4(-2.5) 7.1(-3) 5.9(-3.5) 5.0(-4) 4.2(-4.5) 3.5(-5) 3.0(-5.5) 2.5(-6)
(13 steps in 1/2EV increments)
Settable Aperture Value (*3) F1.4+1/2EV. - F11     (1/2EV.increments, 12steps)
F1.4+1/2EV. - F11+1/4EV. (1/4EV.increments, 24steps)
Focus Light (LED) Intensity 180lm (*4)
Beam Angle 100° x 100° circular beam [without a diffuser]
110° x 110° circular beam [with a diffuser]
20°            [Focus Light (LED)]
Color Temp. 5500K          [flash light,without a diffuser]
5400K          [flash light,with a diffuser]
Approx. 6000K      [Focus Light (LED)]
Recycle Time
Approx. 1.8 seconds minimum: ["eneloop" batteries (*8)]
Approx. 1.8 seconds minimum: [NiMH batteries (*9)]
Approx. 2.3 seconds minimum: [Alkaline batteries]
Approx. 2.5 seconds minimum: [Lithium 1.5V batteries]
Flash Capacity
Approx. 420 flashes: ["eneloop" batteries (*8)]
Approx. 520 flashes: [NiMH batteries (*9)]
Approx. 400 flashes: [Alkaline batteries]
Approx. 660 flashes: [Lithium 1.5V batteries]
Focus Light (LED) operable duration
Approx. 3hrs 30 min: ["eneloop" batteries (*8)]
Approx. 3hrs 30 min: [NiMH batteries (*9)]
Approx. 2hrs 15 min: [Alkaline batteries]
Approx. 4hrs 15 min: [Lithium (1.5V) batteries]
AA "eneloop"(HR-3UTG) x 4, or "new generation" NiMH batteries x 4 (*8)
AA NiMH x 4 [good quality] (*9),
AA Alkaline x 4,
AA Lithium (1.5V) x 4
Focus Light Mode [Single mode]
Shutter linked auto OFF (manually turns ON / turns OFF upon shutter release)
[Continuous mode]
Shutter linked auto OFF (manually turns ON / turns OFF upon shutter release / automatically turns ON after approx. 0.5 second)
Dimensions Diameter: 99mm / 3.9in Height: 122mm / 4.8in Depth: 100mm / 3.9in
(*Not including Slave Sensor and Arm Base)
Weight [air] 544g / 19.2oz (without batteries)
[underwater] Approx. 47g/1.7oz (with 4 "eneloop" batteries)
Working Temperature 0°C~30°C / 32°F~86°F [*water temperature]
Storage Temperature 0°C~30°C / 32°F~86°F [*air temperature] +50°C / 122°F (temporary allowable temperature limit)
Depth Rating 100m / 328ft
Body Material / Color Polycarbonate resin / red
Package Contents Magnet, Magnet Screw, Magnet Screw Tighter, Spare O-ring (Battery Box), INON Grease, Light Filter Sticker·Red

(*1) Flash modes / connection method is vary depending on camera system. Also flash mode is vary depending on connection method. Please refer to respective sections of the user manuals for detail.
(*2) Measurement in air/ISO100 · m, Nominal value
(*3) Usable for External Auto mode. At ISO100 equivalent film sensitivity.
(*4) Nominal value by LED manufacture.
(*5) Measured with FULL strobe output at 30-second intervals with both Focus Light (Z-240,D-2000) and Advanced Cancel Circuit OFF, at 25°C/77°F giving 10 minutes cooling period every 50 flashes.
(*6) Operable duration is accumulated time of continuous mode with 5 minute cooling OFF every 30 minutes (Z-240) / 60 minutes (D-2000) at 25°C/77°F with test batteries * Cooling OFF time is excluded.
(*7) Recycle Time / Flash Capacity / Focus Light operable duration (Z-240,D-2000) based on INON test data. Actual values may vary depending on battery manufacturer, battery type and age.
(*8) Including listed "new generation" NiMH batteries ("eneloop" type) having less self-discharging and heat generation charactistic comparing to "conventional" or "high-capacity" NiMH and confirmed compatibility by INON INC,.
(*9) Some "conventional" or "high-capacity" NiMH rechargeable batteries have significant self-discharge and heat-generatinmg characteristic resulting difficulty to keep their performance during usage. We recommend to use recommended batterie.
(*10) Usable when connecting to INON [X1 series] or [Optical Converter TTL] using [Optical Cable Connection], or connecting to TTL operation INON strobe (*11) by [Optical D Slave Cable Connection].
(*11) S-2000, Z-240, D-2000, D-2000S, D-2000W, D-2000Wn
Test battery

"eneloop" battery SANYO "eneloop", HR-3UTG, 1.2V, Min.1,900mAh, Typ.2,000mAh
NiMH battery SANYO Twicell 2700 Series, HR-3UG, 1.2V,Min.2,500mAh, Typ.2,700mAh
Alkaline battery Maxcell ALKALINE ACE, LR6(K), 1.5V
Lithium battery (1.5V) Energizer LITHIUM,FR6, 1.5V

New generation NiMH batteries
SANYO Model name : "eneloop"[recommended]
Model code : HR-3UTG
SONY Model name : Cycle Energy Blue
Model code : NH-AA-2BKA, NH-AA-4BKA
Panasonic Model name : Rechargeable NiMH(AA)
Model code : HR-3MPS
Maha Energy Corporation Model name : IMEDION
Model code : MHRAAI4
GP Batteries International Limited Model name : ReCyko+
Model code : 210AAHCBE
ANSMANN AG Model name : maxE
Model code : 5030991, 5030992, 5035052
Electrochem Automation Inc. Model name : NEXcell energyON
Model code : n/a (AA 2000mAh)