Specification Brand : ElectronicMaker BulletPoint : DC 12V R223C16 16-Channel Relay Board RS232 DB9 Delay Relay Switch Module Female Interface Serial Port BulletPoint1 : Digital display DC voltage detection, control the relay output. BulletPoint2 : When the measured voltage is lower than the lower limit or higher than upper limit value, the relay works. BulletPoint3 : Adjustable voltage limit: 0-99.9V. BulletPoint4 : Can be used for voltage detection switch, battery over/under voltage protector or discharge meter. BulletPoint5 : We provide 6 months of after-sales protection service. If you have any questions, please feel free to contact us. ConnectorType : Screw CurrentRating : 10 amps ExternallyAssignedProductIdentifier : 5202036993799 ExternallyAssignedProductIdentifier1 : 754554483412 ExternallyAssignedProductIdentifier2 : 0754554483412 ExternallyAssignedProductIdentifier3 : 00754554483412 FinishType : Finish IncludedComponents : inc IncludedComponents1 : inc IncludedComponents2 : inc IncludedComponents3 : inc IncludedComponents4 : inc IncludedComponents5 : inc ItemName : DC 12V R223C16 16-Channel Relay Board RS232 DB9 Delay Relay Switch Module Female Interface Serial Port ItemPackageDimensions_Height : 0.78 inches ItemPackageDimensions_Length : 1.96 inches ItemPackageDimensions_Width : 1.59 inches ItemPackageQuantity : 1 ItemTypeKeyword : voltage-monitoring-relays Manufacturer : ElectronicMaker Material : Lithium MaximumSwitchingCurrent : 10 amps MaximumSwitchingVoltage : 12 volts MeasurementSystem : Metric MeasurementSystem1 : Imperial MeasurementSystem2 : Metric ModelName : Focketydzyp1wuh4q-13 ModelNumber : 3TK28251BB40 NumberOfItems : 1 OperationMode : Automatic PartNumber : HYSYMo-10048 PowerSourceType : PowerSource ProductDescription : Feature: 1. 16-channel relay module, multi-channel control. 2. RS232 DB9 female interface, convenient and practical. 3. Open, close, jog, self-lock, interlock, delay, all open, all close 8 working modes (8-byte instruction no delay mode). 4. AT command and 8-byte command. The two commands are automatically recognized without switching. The maximum delay under the AT command is 9999 seconds. 5. Maximum Load: 10A 250VAC, 10A 125VAC, 10A 30VDC, 10A 28VDC, 10A 12VDC Specification: Item Type: 16-Channel Relay Board Power Supply: DC 12V power supply (voltage range 9-13V) Standby Current: 18MA Interface: RS232 DB9 female interface 8 Working Modes (8-byte Instruction Without Delay Mode): Open, close, jog, self-lock, interlock, delay, all open, all close Two Types Of Instructions: AT and 8-byte instructions. The two types of instructions are automatically recognized without switching. Maximum delay under AT command is 9999 seconds Size: Approx. 172 x 65 x 19mm 6.8 x 2.6 x 0.7in Weight: 228 g 8 oz(approx.) Maximum Load: 10A 250VAC, 10A 125VAC, 10A 30VDC, 10A 28VDC, 10A 12VDC Package List: 1 x DC 12V R223C16 16-Channel Relay Board RS232 DB9 Delay Relay Switch Module Female Interface Serial Port ProductSiteLaunchDate : 2021-04-24T17:58:05.361Z Size : 63A SpecificationMet : CSA StreetDate : 2017-12-12T00:00:01Z Style : Modern SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 39122300 UpperTemperatureRating : 85 degrees_celsius