Song Meter SM4BAT-FS Bat Recorder with SMM-U2 Microphone and 5m Cable

£950.00 Ex. VAT
In stock

Specially engineered to capture quality ultrasonic bat recordings.


If you conduct bat surveys and require the ability to store terabytes of data and the battery life to record in the field for weeks at a time, the compact and lightweight Song Meter SM4BAT FS is the perfect tool. Powered by four D-cell batteries it will record for 275 - 450 hours, depending on bat activity.

Scheduling functions allow you to set the detector to record continuously or to use complex schedules based on specific times of the day or relative to sunset and sunrise. You can also tell the SM4BAT FS on what day you would like it to begin recording, or whether to begin immediately. Your inputted schedule will then be repeated daily until you stop it or until it is limited by battery life or memory space.

This compact device is proven and reliable, with built-in fail-safe and fault-tolerant tech. Advanced triggering ensures the device only records when bats are present, and an optional noise scrubber automatically deletes false triggers that do not contain bats.

Key features:

  • Weatherproof design suitable for any environment
  • Designed for use with the SMM-U2 microphone
  • Extended field deployments, with up to 48 ten-hour nights
  • Choose a quick-start schedule or easily create your own
  • Set date, time and location for multiple recorders with GPS attachment
  • Optional 16 kHz high pass filter to reduce lower frequency noise
  • W4V compression for doubling your SD card capacity without degradation

Technical Specifications:

Dimensions (mm): 218 x 152 x 78
Weight (g; without batteries): 730
Weight (g; with batteries): 1300

Enclosure material: Polycarbonate
Fully Weatherproof: Yes
Operating Temp: -4° to 185° F / -20°C to 85°C

Recording Technology: 16-bit PCM .wav files or compressed .w4v files
Channels: Single
Sample Rates (kHz; full-Spectrum): 192, 256, 384, 500
Run-time (hrs): Up to 480 (48 x 10 nights), depending on bat activity
*Run times can vary by 50% depending on specific brands and models of flashcards, batteries used (alkaline versus rechargeable), temperature and configuration.

Internal power: 4x D-size alkaline or rechargeable NiHM batteries
Ext. power: via optional SM3/SM4 Power Cable

Storage: 2x SDHC/SDXC flash card slots (class 4 or greater)
Total capacity: More than 1 terabyte using 2x 512GB SDXC cards

*Compression is available to further increase storage capacity. We recommend SanDisk brand SDHC/SDXC cards.

Warranty: 3 years (excluding microphones, batteries, and accessories)

Specifications for SSM-U2

Overview of the SM4BAT:



We now offer FREE UK SHIPPING for online orders over £75 to the UK mainland (under 20kg), including service & repair items. For information on qualifying requirements for free shipping, please see our delivery page.

We aim for next working day delivery on all UK mainland orders received before 2.30pm. Where products need to be made to order or are not a regular stock item, or during busy times of year, despatch times may be longer.

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Important Information About Backorders

At Wildcare there are times when items are only available on a backorder basis, either due to high demand or if the item is a special order item. We refer to these as ‘backorder items.

Backorder items are clearly listed on our website as ‘Order To Reserve Stock (Backorder)’. Items that are in stock and ready to be shipped immediately are listed as ‘In Stock’.

When you place an order for a back order item or an order that includes back order items, a member of our team will be in contact within 48 hours of your order to confirm the lead time for delivery. For any queries before then, please call us on: 01451 833 181

Avoiding Disappointment

We cannot guarantee that a backordered item will come back into stock or be delivered for a specific date, however we will always do our best to keep you informed and updated.

If your back order is urgent or required within a specific time frame we suggest to call us on 01451 833 181 so we can keep your requirements in mind throughout the waiting period.


If you receive damaged items or the wrong goods, please let us know straight away so that we can arrange for them to be returned to us and replaced as quickly as possible.

You will need to obtain a Returns Number  - please call us on 01451 833 181 or email [email protected]

Please return goods, WITH THE RETURNS NUMBER MARKED ON THE PARCEL to: Wildcare, Eastgate House, Moreton Road, Longborough, GL56 0QJ

We may ask for a photograph any damaged items before we agree to replace them.

Please click here to view our full returns policy.